{"items":[{"id":"NVI-00006675","kind":"vulnerability","title":"league/commonmark: Quadratic-time denial of service in the GitHub Flavored Markdown Table extension block-start scan","revision":6,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-3q6v-r5mr-hxv8","CVE-2026-105830"],"plain_summary":"GitHub lists this reviewed advisory for league/commonmark. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0cdf8f3aa8dde706b2427237ee26cc7d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.10.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T15:36:17.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-94c07fb076cf18c4e95cb8c2be10ae9d"},{"kind":"CVSS","as_of":"2026-10-08T21:33:42.423Z","value":"7.5 HIGH (3.1)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-acb1e032d110d3f8caadbfcbb1a22968"},{"kind":"CVSS","as_of":"2026-10-08T21:33:42.423Z","value":"8.7 HIGH (4.0)","meaning":"disclosure@vulncheck.com severity; no combined Null risk score.","source_id":"sr-acb1e032d110d3f8caadbfcbb1a22968"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.368%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.30701. Missing scores are unknown.","source_id":"sr-0cdf8f3aa8dde706b2427237ee26cc7d"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-94c07fb076cf18c4e95cb8c2be10ae9d","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-be2ffa8a1c48cd410eba35f922e1c409","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.659Z"},{"id":"sr-acb1e032d110d3f8caadbfcbb1a22968","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105830","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-105830","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:38.141Z"},{"id":"sr-0cdf8f3aa8dde706b2427237ee26cc7d","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-105830","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.773Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-94c07fb076cf18c4e95cb8c2be10ae9d"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":[">= 2.0.0, <= 2.10.1"]},{"certainty":"source_listed","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.10.2"]}],"null_published_at":"2026-11-06T15:18:17.675Z","source_updated_at":"2026-09-30T15:36:17.000Z","source_disclosed_at":"2026-09-30T15:36:13.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:49.659Z"},{"id":"NVI-00006675","kind":"vulnerability","title":"league/commonmark: Quadratic-time denial of service in the GitHub Flavored Markdown Table extension block-start scan","revision":5,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3q6v-r5mr-hxv8","CVE-2026-105830"],"plain_summary":"GitHub lists this reviewed advisory for league/commonmark. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0cdf8f3aa8dde706b2427237ee26cc7d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.10.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T15:36:17.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-94c07fb076cf18c4e95cb8c2be10ae9d"},{"kind":"EPSS","as_of":"2026-11-03T12:00:27.000Z","value":"0.368%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.30701. Missing scores are unknown.","source_id":"sr-0cdf8f3aa8dde706b2427237ee26cc7d"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-94c07fb076cf18c4e95cb8c2be10ae9d","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-be2ffa8a1c48cd410eba35f922e1c409","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.659Z"},{"id":"sr-0cdf8f3aa8dde706b2427237ee26cc7d","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-105830","publisher":"FIRST EPSS","observed_at":"2026-11-03T17:44:07.773Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-94c07fb076cf18c4e95cb8c2be10ae9d"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":[">= 2.0.0, <= 2.10.1"]},{"certainty":"source_listed","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.10.2"]}],"null_published_at":"2026-11-06T00:29:57.247Z","source_updated_at":"2026-09-30T15:36:17.000Z","source_disclosed_at":"2026-09-30T15:36:13.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:41:49.659Z"},{"id":"NVI-00006675","kind":"vulnerability","title":"league/commonmark: Quadratic-time denial of service in the GitHub Flavored Markdown Table extension block-start scan","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3q6v-r5mr-hxv8","CVE-2026-105830"],"plain_summary":"GitHub lists this reviewed advisory for league/commonmark. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-24eaeaedbc0bc66fab4d86e73cfe1e80"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.10.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T15:36:17.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-94c07fb076cf18c4e95cb8c2be10ae9d"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.368%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.3066. Missing scores are unknown.","source_id":"sr-24eaeaedbc0bc66fab4d86e73cfe1e80"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-94c07fb076cf18c4e95cb8c2be10ae9d","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-be2ffa8a1c48cd410eba35f922e1c409","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.659Z"},{"id":"sr-24eaeaedbc0bc66fab4d86e73cfe1e80","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-105830","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.263Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-94c07fb076cf18c4e95cb8c2be10ae9d"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":[">= 2.0.0, <= 2.10.1"]},{"certainty":"source_listed","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.10.2"]}],"null_published_at":"2026-11-04T18:04:03.192Z","source_updated_at":"2026-09-30T15:36:17.000Z","source_disclosed_at":"2026-09-30T15:36:13.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:41:49.659Z"},{"id":"NVI-00006675","kind":"vulnerability","title":"league/commonmark: Quadratic-time denial of service in the GitHub Flavored Markdown Table extension block-start scan","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3q6v-r5mr-hxv8","CVE-2026-105830"],"plain_summary":"GitHub lists this reviewed advisory for league/commonmark. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1d6f90a17994494336fd20e70dd4a83d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"The original advisory lists fixed boundaries 2.10.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-30T15:36:17.000Z","value":"7.5 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-94c07fb076cf18c4e95cb8c2be10ae9d"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.368%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.30666. Missing scores are unknown.","source_id":"sr-1d6f90a17994494336fd20e70dd4a83d"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-94c07fb076cf18c4e95cb8c2be10ae9d","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T07:22:52.960Z"},{"id":"sr-be2ffa8a1c48cd410eba35f922e1c409","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.659Z"},{"id":"sr-1d6f90a17994494336fd20e70dd4a83d","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-105830","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.373Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-94c07fb076cf18c4e95cb8c2be10ae9d"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":[">= 2.0.0, <= 2.10.1"]},{"certainty":"source_listed","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.10.2"]}],"null_published_at":"2026-11-01T07:29:12.930Z","source_updated_at":"2026-09-30T15:36:17.000Z","source_disclosed_at":"2026-09-30T15:36:13.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:49.659Z"},{"id":"NVI-00006675","kind":"vulnerability","title":"league/commonmark: Quadratic-time denial of service in the GitHub Flavored Markdown Table extension block-start scan","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3q6v-r5mr-hxv8","CVE-2026-105830"],"plain_summary":"OSV carries this publisher advisory for league/commonmark. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 2.10.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1d6f90a17994494336fd20e70dd4a83d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.368%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.30666. Missing scores are unknown.","source_id":"sr-1d6f90a17994494336fd20e70dd4a83d"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-be2ffa8a1c48cd410eba35f922e1c409","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.659Z"},{"id":"sr-1d6f90a17994494336fd20e70dd4a83d","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-105830","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.373Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.10.2"]}],"null_published_at":"2026-10-31T22:27:09.605Z","source_updated_at":"2026-10-09T02:56:07.813Z","source_disclosed_at":"2026-09-30T15:36:13.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:41:49.659Z"},{"id":"NVI-00006675","kind":"vulnerability","title":"league/commonmark: Quadratic-time denial of service in the GitHub Flavored Markdown Table extension block-start scan","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3q6v-r5mr-hxv8","CVE-2026-105830"],"plain_summary":"OSV carries this publisher advisory for league/commonmark. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 2.10.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-be2ffa8a1c48cd410eba35f922e1c409","url":"https://github.com/advisories/GHSA-3q6v-r5mr-hxv8","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3q6v-r5mr-hxv8","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.659Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-be2ffa8a1c48cd410eba35f922e1c409"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"## Summary\n\n`league/commonmark`'s GitHub Flavored Markdown Table extension registers `TableStartParser` as a block-start parser. While a paragraph is the active block, the core block parser calls `TableStartParser::tryStart()` on every non-blank line. Its first action fetches the entire growing paragraph buffer via `getParagraphContent()` and runs `strpos($paragraph, '|')` across all of it. For a paragraph of M pipe-free lines, line k rescans about k lines of buffer, so total work is 1+2+...+M, which is O(M^2). An unauthenticated user who submits a single large paragraph of pipe-free lines that do not begin with a letter (see Attack Chain) to any service that converts untrusted Markdown with `GithubFlavoredMarkdownConverter` (or any environment that enables `TableExtension`) drives seconds to tens of seconds of single-core CPU that grows quadratically with body size, enough to exhaust worker processes and deny service.\n\n## Root Cause\n\nThe GFM table detector performs a per-line \"quick check\" against the whole accumulated paragraph rather than only the portion that could form a table header. A paragraph never closes while non-blank lines keep arriving, so its buffer grows without bou","public_affected_ranges":["ECOSYSTEM: introduced 2.0.0; fixed 2.10.2"]}],"null_published_at":"2026-10-31T22:13:10.068Z","source_updated_at":"2026-10-09T02:56:07.813Z","source_disclosed_at":"2026-09-30T15:36:13.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:41:49.659Z"}],"next_cursor":null,"snapshot_revision":"42594"}