{"items":[{"id":"NVI-00003676","kind":"vulnerability","title":"league/commonmark has an embed extension allowed_domains bypass","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-hh8v-hgvp-g3f5","CVE-2026-33347"],"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 2.8.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-46f33e369a0446d37f123fc04e958897"],"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-2536fb63ae79aad3dd679ee21a2b5c8e"],"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":"2026-06-17T10:37:21.270Z","value":"6.1 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-6bbfe4e7de3b91835ca8756bc4db5993"},{"kind":"CVSS","as_of":"2026-06-17T10:37:21.270Z","value":"6.3 MEDIUM (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-6bbfe4e7de3b91835ca8756bc4db5993"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.250%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.1639. Missing scores are unknown.","source_id":"sr-2536fb63ae79aad3dd679ee21a2b5c8e"}],"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-46f33e369a0446d37f123fc04e958897","url":"https://github.com/advisories/GHSA-hh8v-hgvp-g3f5","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-hh8v-hgvp-g3f5","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.429Z"},{"id":"sr-6bbfe4e7de3b91835ca8756bc4db5993","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33347","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-33347","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:22:50.140Z"},{"id":"sr-2536fb63ae79aad3dd679ee21a2b5c8e","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-2026-33347","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.851Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-46f33e369a0446d37f123fc04e958897"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"### Impact\n\nThe `DomainFilteringAdapter` in the Embed extension is vulnerable to an allowlist bypass due to a missing hostname boundary assertion in the domain-matching regex. An attacker-controlled domain like `youtube.com.evil` passes the allowlist check when `youtube.com` is an allowed domain.\n\nThis enables two attack vectors:\n\n- **SSRF**: The `OscaroteroEmbedAdapter` makes server-side HTTP requests to the embed URL via the `embed/embed` library. A bypassed domain filter causes the server to make outbound requests to an attacker-controlled host, potentially probing internal services or exfiltrating request metadata.\n- **XSS**: `EmbedRenderer` outputs the oEmbed response HTML directly into the page with no sanitization. An attacker controlling the bypassed domain can return arbitrary HTML/JavaScript in their oEmbed response, which is rendered verbatim.\n\nAny application using the `Embed` extension and relying on `allowed_domains` to restrict domains when processing untrusted Markdown input is affected.\n\n### Patches\n\nThis has been patched in version **2.8.2**. The fix replaces the regex-based domain check with explicit hostname parsing using `parse_url()`, ensuring exact domain and","public_affected_ranges":["ECOSYSTEM: introduced 2.3.0; fixed 2.8.2"]}],"null_published_at":"2026-11-08T19:53:33.656Z","source_updated_at":"2026-03-27T22:16:23.526Z","source_disclosed_at":"2026-03-19T19:04:24.000Z","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":"2026-10-31T21:42:20.429Z"},{"id":"NVI-00003676","kind":"vulnerability","title":"league/commonmark has an embed extension allowed_domains bypass","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-hh8v-hgvp-g3f5","CVE-2026-33347"],"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 2.8.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-46f33e369a0446d37f123fc04e958897"],"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-228841eaf1fbe5ce0771b90109ecf20f"],"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":"2026-06-17T10:37:21.270Z","value":"6.1 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-6bbfe4e7de3b91835ca8756bc4db5993"},{"kind":"CVSS","as_of":"2026-06-17T10:37:21.270Z","value":"6.3 MEDIUM (4.0)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-6bbfe4e7de3b91835ca8756bc4db5993"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.250%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.16412. Missing scores are unknown.","source_id":"sr-228841eaf1fbe5ce0771b90109ecf20f"}],"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-46f33e369a0446d37f123fc04e958897","url":"https://github.com/advisories/GHSA-hh8v-hgvp-g3f5","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-hh8v-hgvp-g3f5","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.429Z"},{"id":"sr-6bbfe4e7de3b91835ca8756bc4db5993","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33347","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-33347","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:22:50.140Z"},{"id":"sr-228841eaf1fbe5ce0771b90109ecf20f","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-2026-33347","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.377Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-46f33e369a0446d37f123fc04e958897"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"### Impact\n\nThe `DomainFilteringAdapter` in the Embed extension is vulnerable to an allowlist bypass due to a missing hostname boundary assertion in the domain-matching regex. An attacker-controlled domain like `youtube.com.evil` passes the allowlist check when `youtube.com` is an allowed domain.\n\nThis enables two attack vectors:\n\n- **SSRF**: The `OscaroteroEmbedAdapter` makes server-side HTTP requests to the embed URL via the `embed/embed` library. A bypassed domain filter causes the server to make outbound requests to an attacker-controlled host, potentially probing internal services or exfiltrating request metadata.\n- **XSS**: `EmbedRenderer` outputs the oEmbed response HTML directly into the page with no sanitization. An attacker controlling the bypassed domain can return arbitrary HTML/JavaScript in their oEmbed response, which is rendered verbatim.\n\nAny application using the `Embed` extension and relying on `allowed_domains` to restrict domains when processing untrusted Markdown input is affected.\n\n### Patches\n\nThis has been patched in version **2.8.2**. The fix replaces the regex-based domain check with explicit hostname parsing using `parse_url()`, ensuring exact domain and","public_affected_ranges":["ECOSYSTEM: introduced 2.3.0; fixed 2.8.2"]}],"null_published_at":"2026-11-02T20:21:10.320Z","source_updated_at":"2026-03-27T22:16:23.526Z","source_disclosed_at":"2026-03-19T19:04:24.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:20.429Z"},{"id":"NVI-00003676","kind":"vulnerability","title":"league/commonmark has an embed extension allowed_domains bypass","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-hh8v-hgvp-g3f5","CVE-2026-33347"],"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 2.8.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-46f33e369a0446d37f123fc04e958897"],"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-228841eaf1fbe5ce0771b90109ecf20f"],"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":"0.250%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.16412. Missing scores are unknown.","source_id":"sr-228841eaf1fbe5ce0771b90109ecf20f"}],"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-46f33e369a0446d37f123fc04e958897","url":"https://github.com/advisories/GHSA-hh8v-hgvp-g3f5","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-hh8v-hgvp-g3f5","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.429Z"},{"id":"sr-228841eaf1fbe5ce0771b90109ecf20f","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-2026-33347","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.377Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-46f33e369a0446d37f123fc04e958897"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"### Impact\n\nThe `DomainFilteringAdapter` in the Embed extension is vulnerable to an allowlist bypass due to a missing hostname boundary assertion in the domain-matching regex. An attacker-controlled domain like `youtube.com.evil` passes the allowlist check when `youtube.com` is an allowed domain.\n\nThis enables two attack vectors:\n\n- **SSRF**: The `OscaroteroEmbedAdapter` makes server-side HTTP requests to the embed URL via the `embed/embed` library. A bypassed domain filter causes the server to make outbound requests to an attacker-controlled host, potentially probing internal services or exfiltrating request metadata.\n- **XSS**: `EmbedRenderer` outputs the oEmbed response HTML directly into the page with no sanitization. An attacker controlling the bypassed domain can return arbitrary HTML/JavaScript in their oEmbed response, which is rendered verbatim.\n\nAny application using the `Embed` extension and relying on `allowed_domains` to restrict domains when processing untrusted Markdown input is affected.\n\n### Patches\n\nThis has been patched in version **2.8.2**. The fix replaces the regex-based domain check with explicit hostname parsing using `parse_url()`, ensuring exact domain and","public_affected_ranges":["ECOSYSTEM: introduced 2.3.0; fixed 2.8.2"]}],"null_published_at":"2026-10-31T22:27:09.611Z","source_updated_at":"2026-03-27T22:16:23.526Z","source_disclosed_at":"2026-03-19T19:04:24.000Z","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":"2026-10-31T21:42:20.429Z"},{"id":"NVI-00003676","kind":"vulnerability","title":"league/commonmark has an embed extension allowed_domains bypass","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-hh8v-hgvp-g3f5","CVE-2026-33347"],"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 2.8.2 for league/commonmark. Confirm the publisher’s latest guidance.","source_ids":["sr-46f33e369a0446d37f123fc04e958897"],"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-46f33e369a0446d37f123fc04e958897","url":"https://github.com/advisories/GHSA-hh8v-hgvp-g3f5","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-hh8v-hgvp-g3f5","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.429Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-46f33e369a0446d37f123fc04e958897"],"technology":"league/commonmark","known_exclusions":[],"conditions_summary":"### Impact\n\nThe `DomainFilteringAdapter` in the Embed extension is vulnerable to an allowlist bypass due to a missing hostname boundary assertion in the domain-matching regex. An attacker-controlled domain like `youtube.com.evil` passes the allowlist check when `youtube.com` is an allowed domain.\n\nThis enables two attack vectors:\n\n- **SSRF**: The `OscaroteroEmbedAdapter` makes server-side HTTP requests to the embed URL via the `embed/embed` library. A bypassed domain filter causes the server to make outbound requests to an attacker-controlled host, potentially probing internal services or exfiltrating request metadata.\n- **XSS**: `EmbedRenderer` outputs the oEmbed response HTML directly into the page with no sanitization. An attacker controlling the bypassed domain can return arbitrary HTML/JavaScript in their oEmbed response, which is rendered verbatim.\n\nAny application using the `Embed` extension and relying on `allowed_domains` to restrict domains when processing untrusted Markdown input is affected.\n\n### Patches\n\nThis has been patched in version **2.8.2**. The fix replaces the regex-based domain check with explicit hostname parsing using `parse_url()`, ensuring exact domain and","public_affected_ranges":["ECOSYSTEM: introduced 2.3.0; fixed 2.8.2"]}],"null_published_at":"2026-10-31T22:12:48.026Z","source_updated_at":"2026-03-27T22:16:23.526Z","source_disclosed_at":"2026-03-19T19:04:24.000Z","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":"2026-10-31T21:42:20.429Z"}],"next_cursor":null,"snapshot_revision":"42594"}