{"items":[{"id":"NVI-00015095","kind":"vulnerability","title":"Loofah: SVG `href` attribute bypasses local-reference restriction","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9wjq-cp2p-hrgf","CVE-2026-73490"],"plain_summary":"GitHub lists this reviewed advisory for loofah. 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-0056d27e438d2ae95e5fdf78529a1d90"],"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":"2026-08-12T20:58:19.000Z","value":"4.7 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1f77d81ae528cb65635209bfc376d8e8"},{"kind":"EPSS","as_of":"2026-11-05T12:03:04.000Z","value":"0.296%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.22349. Missing scores are unknown.","source_id":"sr-0056d27e438d2ae95e5fdf78529a1d90"}],"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-1f77d81ae528cb65635209bfc376d8e8","url":"https://github.com/advisories/GHSA-9wjq-cp2p-hrgf","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9wjq-cp2p-hrgf","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:16:47.162Z"},{"id":"sr-0056d27e438d2ae95e5fdf78529a1d90","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-2026-73490","publisher":"FIRST EPSS","observed_at":"2026-11-06T07:17:46.397Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1f77d81ae528cb65635209bfc376d8e8"],"technology":"loofah","known_exclusions":[],"conditions_summary":"## Summary\n\nLoofah's HTML5 sanitizer restricted only the `xlink:href` attribute on certain SVG elements to local, same-document references. Browsers also accept a plain `href` attribute as an alternative to the deprecated `xlink:href` per the SVG 2 spec, but Loofah did not apply the same restriction to it, allowing those elements to reference arbitrary external documents.\n\n## Impact\n\nSVG `` can load and render external SVG content by reference. If the referenced external SVG is same-origin and contains scripts or other dangerous content, it could execute in the context of the sanitized document. `` can load external images, which can be used for tracking. Modern browsers restrict cross-origin `` fetches, which limits but does not eliminate the risk.\n\nApplications that sanitize user-supplied SVG (directly, or as part of HTML) with Loofah's default allowlist are affected.\n\n## Mitigation\n\nUpgrade to Loofah >= 2.25.2.\n\n## Credit\n\nFound by the maintainer, Mike Dalessio, during a security audit.","public_affected_ranges":["< 2.25.2"]}],"null_published_at":"2026-11-07T07:07:42.508Z","source_updated_at":"2026-08-12T20:58:19.000Z","source_disclosed_at":"2026-07-21T22:01:58.000Z","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":"2026-11-02T20:16:47.162Z"},{"id":"NVI-00015095","kind":"vulnerability","title":"Loofah: SVG `href` attribute bypasses local-reference restriction","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9wjq-cp2p-hrgf","CVE-2026-73490"],"plain_summary":"GitHub lists this reviewed advisory for loofah. 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-1f77d81ae528cb65635209bfc376d8e8"],"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":"2026-08-12T20:58:19.000Z","value":"4.7 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-1f77d81ae528cb65635209bfc376d8e8"}],"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-1f77d81ae528cb65635209bfc376d8e8","url":"https://github.com/advisories/GHSA-9wjq-cp2p-hrgf","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-9wjq-cp2p-hrgf","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:16:47.162Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1f77d81ae528cb65635209bfc376d8e8"],"technology":"loofah","known_exclusions":[],"conditions_summary":"## Summary\n\nLoofah's HTML5 sanitizer restricted only the `xlink:href` attribute on certain SVG elements to local, same-document references. Browsers also accept a plain `href` attribute as an alternative to the deprecated `xlink:href` per the SVG 2 spec, but Loofah did not apply the same restriction to it, allowing those elements to reference arbitrary external documents.\n\n## Impact\n\nSVG `` can load and render external SVG content by reference. If the referenced external SVG is same-origin and contains scripts or other dangerous content, it could execute in the context of the sanitized document. `` can load external images, which can be used for tracking. Modern browsers restrict cross-origin `` fetches, which limits but does not eliminate the risk.\n\nApplications that sanitize user-supplied SVG (directly, or as part of HTML) with Loofah's default allowlist are affected.\n\n## Mitigation\n\nUpgrade to Loofah >= 2.25.2.\n\n## Credit\n\nFound by the maintainer, Mike Dalessio, during a security audit.","public_affected_ranges":["< 2.25.2"]}],"null_published_at":"2026-11-03T10:03:26.547Z","source_updated_at":"2026-08-12T20:58:19.000Z","source_disclosed_at":"2026-07-21T22:01:58.000Z","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":"2026-11-02T20:16:47.162Z"}],"next_cursor":null,"snapshot_revision":"42594"}