{"items":[{"id":"NVI-00001830","kind":"vulnerability","title":"league/commonmark contains a XSS vulnerability in Attributes extension","revision":4,"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-3527-qv2q-pfvx","CVE-2025-46734"],"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-919bc565ff07742671c21c79aae7331e"],"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 2.7.0 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-0210f446976a9d020fb5c7e312032e3c"],"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":"2026-05-28T10:01:30.000Z","value":"6.4 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-5d5f0cf188683baa73f9a6125b71ce81"},{"kind":"CVSS","as_of":"2026-06-17T09:26:53.917Z","value":"6.4 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-d129109ac64bad42e6d49072837f4228"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.378%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.31779. Missing scores are unknown.","source_id":"sr-919bc565ff07742671c21c79aae7331e"}],"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-5d5f0cf188683baa73f9a6125b71ce81","url":"https://github.com/advisories/GHSA-3527-qv2q-pfvx","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-3527-qv2q-pfvx","publisher":"GitHub Advisory Database","observed_at":"2026-11-07T00:53:22.747Z"},{"id":"sr-0210f446976a9d020fb5c7e312032e3c","url":"https://github.com/advisories/GHSA-3527-qv2q-pfvx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3527-qv2q-pfvx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.650Z"},{"id":"sr-d129109ac64bad42e6d49072837f4228","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-46734","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2025-46734","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:05.821Z"},{"id":"sr-919bc565ff07742671c21c79aae7331e","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-2025-46734","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.371Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-5d5f0cf188683baa73f9a6125b71ce81"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"### Summary\nCross-site scripting (XSS) vulnerability in the Attributes extension of the league/commonmark library (versions 1.5.0 through 2.6.x) allows remote attackers to insert malicious JavaScript calls into HTML.\n\n### Details\n\nThe league/commonmark library provides configuration options such as `html_input: 'strip'` and `allow_unsafe_links: false` to mitigate cross-site scripting (XSS) attacks by stripping raw HTML and disallowing unsafe links. However, when the Attributes Extension is enabled, it introduces a way for users to inject arbitrary HTML attributes into elements via Markdown syntax using curly braces.\n\nAs a result, even with the secure configuration shown above, an attacker can inject dangerous attributes into applications using this extension via a payload such as:\n\n```md\n![](){onerror=alert(1)}\n```\n\nWhich results in the following HTML:\n\n```html\n\n```\n\nWhich causes the JS to execute immediately on page load.\n\n### Patches\n\nVersion 2.7.0 contains three changes to prevent this XSS attack vector:\n\n- All attributes starting with `on` are considered unsafe and block","public_affected_ranges":[">= 1.5.0, < 2.7.0"]},{"certainty":"source_listed","source_ids":["sr-0210f446976a9d020fb5c7e312032e3c"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"### Summary\nCross-site scripting (XSS) vulnerability in the Attributes extension of the league/commonmark library (versions 1.5.0 through 2.6.x) allows remote attackers to insert malicious JavaScript calls into HTML.\n\n### Details\n\nThe league/commonmark library provides configuration options such as `html_input: 'strip'` and `allow_unsafe_links: false` to mitigate cross-site scripting (XSS) attacks by stripping raw HTML and disallowing unsafe links. However, when the Attributes Extension is enabled, it introduces a way for users to inject arbitrary HTML attributes into elements via Markdown syntax using curly braces.\n\nAs a result, even with the secure configuration shown above, an attacker can inject dangerous attributes into applications using this extension via a payload such as:\n\n```md\n![](){onerror=alert(1)}\n```\n\nWhich results in the following HTML:\n\n```html\n\n```\n\nWhich causes the JS to execute immediately on page load.\n\n### Patches\n\nVersion 2.7.0 contains three changes to prevent this XSS attack vector:\n\n- All attributes starting with `on` are considered unsafe and block","public_affected_ranges":["ECOSYSTEM: introduced 1.5.0; fixed 2.7.0"]}],"null_published_at":"2026-11-08T15:11:47.501Z","source_updated_at":"2026-05-28T10:01:30.000Z","source_disclosed_at":"2025-05-05T20:40:36.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:49.650Z"},{"id":"NVI-00001830","kind":"vulnerability","title":"league/commonmark contains a XSS vulnerability in Attributes extension","revision":3,"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-3527-qv2q-pfvx","CVE-2025-46734"],"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 2.7.0 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-0210f446976a9d020fb5c7e312032e3c"],"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-919bc565ff07742671c21c79aae7331e"],"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":"CVSS","as_of":"2026-06-17T09:26:53.917Z","value":"6.4 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-d129109ac64bad42e6d49072837f4228"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.378%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.31779. Missing scores are unknown.","source_id":"sr-919bc565ff07742671c21c79aae7331e"}],"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-0210f446976a9d020fb5c7e312032e3c","url":"https://github.com/advisories/GHSA-3527-qv2q-pfvx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3527-qv2q-pfvx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.650Z"},{"id":"sr-d129109ac64bad42e6d49072837f4228","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-46734","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2025-46734","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:05.821Z"},{"id":"sr-919bc565ff07742671c21c79aae7331e","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-2025-46734","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.371Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0210f446976a9d020fb5c7e312032e3c"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"### Summary\nCross-site scripting (XSS) vulnerability in the Attributes extension of the league/commonmark library (versions 1.5.0 through 2.6.x) allows remote attackers to insert malicious JavaScript calls into HTML.\n\n### Details\n\nThe league/commonmark library provides configuration options such as `html_input: 'strip'` and `allow_unsafe_links: false` to mitigate cross-site scripting (XSS) attacks by stripping raw HTML and disallowing unsafe links. However, when the Attributes Extension is enabled, it introduces a way for users to inject arbitrary HTML attributes into elements via Markdown syntax using curly braces.\n\nAs a result, even with the secure configuration shown above, an attacker can inject dangerous attributes into applications using this extension via a payload such as:\n\n```md\n![](){onerror=alert(1)}\n```\n\nWhich results in the following HTML:\n\n```html\n\n```\n\nWhich causes the JS to execute immediately on page load.\n\n### Patches\n\nVersion 2.7.0 contains three changes to prevent this XSS attack vector:\n\n- All attributes starting with `on` are considered unsafe and block","public_affected_ranges":["ECOSYSTEM: introduced 1.5.0; fixed 2.7.0"]}],"null_published_at":"2026-11-07T22:29:23.439Z","source_updated_at":"2026-03-20T21:31:21.970Z","source_disclosed_at":"2025-05-05T20:40:36.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:49.650Z"},{"id":"NVI-00001830","kind":"vulnerability","title":"league/commonmark contains a XSS vulnerability in Attributes extension","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3527-qv2q-pfvx","CVE-2025-46734"],"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 2.7.0 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-0210f446976a9d020fb5c7e312032e3c"],"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-919bc565ff07742671c21c79aae7331e"],"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":"0.378%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.31779. Missing scores are unknown.","source_id":"sr-919bc565ff07742671c21c79aae7331e"}],"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-0210f446976a9d020fb5c7e312032e3c","url":"https://github.com/advisories/GHSA-3527-qv2q-pfvx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3527-qv2q-pfvx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.650Z"},{"id":"sr-919bc565ff07742671c21c79aae7331e","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-2025-46734","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.371Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0210f446976a9d020fb5c7e312032e3c"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"### Summary\nCross-site scripting (XSS) vulnerability in the Attributes extension of the league/commonmark library (versions 1.5.0 through 2.6.x) allows remote attackers to insert malicious JavaScript calls into HTML.\n\n### Details\n\nThe league/commonmark library provides configuration options such as `html_input: 'strip'` and `allow_unsafe_links: false` to mitigate cross-site scripting (XSS) attacks by stripping raw HTML and disallowing unsafe links. However, when the Attributes Extension is enabled, it introduces a way for users to inject arbitrary HTML attributes into elements via Markdown syntax using curly braces.\n\nAs a result, even with the secure configuration shown above, an attacker can inject dangerous attributes into applications using this extension via a payload such as:\n\n```md\n![](){onerror=alert(1)}\n```\n\nWhich results in the following HTML:\n\n```html\n\n```\n\nWhich causes the JS to execute immediately on page load.\n\n### Patches\n\nVersion 2.7.0 contains three changes to prevent this XSS attack vector:\n\n- All attributes starting with `on` are considered unsafe and block","public_affected_ranges":["ECOSYSTEM: introduced 1.5.0; fixed 2.7.0"]}],"null_published_at":"2026-11-03T02:33:09.151Z","source_updated_at":"2026-03-20T21:31:21.970Z","source_disclosed_at":"2025-05-05T20:40:36.000Z","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":"2026-10-31T21:41:49.650Z"},{"id":"NVI-00001830","kind":"vulnerability","title":"league/commonmark contains a XSS vulnerability in Attributes extension","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3527-qv2q-pfvx","CVE-2025-46734"],"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 2.7.0 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-0210f446976a9d020fb5c7e312032e3c"],"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-0210f446976a9d020fb5c7e312032e3c","url":"https://github.com/advisories/GHSA-3527-qv2q-pfvx","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3527-qv2q-pfvx","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.650Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0210f446976a9d020fb5c7e312032e3c"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"### Summary\nCross-site scripting (XSS) vulnerability in the Attributes extension of the league/commonmark library (versions 1.5.0 through 2.6.x) allows remote attackers to insert malicious JavaScript calls into HTML.\n\n### Details\n\nThe league/commonmark library provides configuration options such as `html_input: 'strip'` and `allow_unsafe_links: false` to mitigate cross-site scripting (XSS) attacks by stripping raw HTML and disallowing unsafe links. However, when the Attributes Extension is enabled, it introduces a way for users to inject arbitrary HTML attributes into elements via Markdown syntax using curly braces.\n\nAs a result, even with the secure configuration shown above, an attacker can inject dangerous attributes into applications using this extension via a payload such as:\n\n```md\n![](){onerror=alert(1)}\n```\n\nWhich results in the following HTML:\n\n```html\n\n```\n\nWhich causes the JS to execute immediately on page load.\n\n### Patches\n\nVersion 2.7.0 contains three changes to prevent this XSS attack vector:\n\n- All attributes starting with `on` are considered unsafe and block","public_affected_ranges":["ECOSYSTEM: introduced 1.5.0; fixed 2.7.0"]}],"null_published_at":"2026-10-31T21:53:28.051Z","source_updated_at":"2026-03-20T21:31:21.970Z","source_disclosed_at":"2025-05-05T20:40:36.000Z","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":"2026-10-31T21:41:49.650Z"}],"next_cursor":null,"snapshot_revision":"42594"}