{"id":"GHSA-x43w-36pp-96g3","revision":null,"records":[{"revision":"7bcc37f1dde54a1ca18969d2c63ee720","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"RUSTSEC-2026-0373","aliases":["GHSA-x43w-36pp-96g3"],"title":"Missing case-insensitive matching for CSS url function","description":"URL filtering, such as relative URLs and URL scheme limits,\nis not always applied when CSS sanitization is used.\n\nWhen the inner URL is quoted, CSS `url(\"\")` is matched case-sensitively,\nwhen it should be matched case-insensitively.\nAs a result, while `url(\"\")` gets the intended domain name filtering,\n`URL(\"\")` does not.\n\nThe following example shows how an application needs to be configured\nto trigger this bug.\n\n```rust\nlet mut builder = Builder::new();\n// allow inline styles\nbuilder.filter_style_properties(hashset![\"background-image\"]);\nbuilder.add_generic_attributes(&[\"style\"]);\n// notice that \"http\" URLs aren't allowed\nbuilder.url_schemes([\"cid\"].into());\n\n// attacker-controlled, presumably\nlet cleaned = builder.clean(r#\"
\"#);\n\n// this is the expected result\nassert_eq!(String::from(&cleaned), r#\"
ok

\"#);\n\n// this is the result that the vulnerable version actually gets\nassert_eq!(String::from(&cleaned), r#\"
ok

\"#);\n```\n\nThis can be used to inject tracking pixels where the application intended to prevent them.\nIt does not allow XSS, and its usefulness for data exfiltration is limited.\n\n---\n\nThis vulnerability was reported by [Louis Li](https://github.com/zhixuli0406).","state":0,"publishedAt":"2026-10-16T12:00:00+00:00","modifiedAt":"2026-10-17T15:30:02.378212+00:00","affected":[{"ecosystem":"crates.io","name":"ammonia","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.0.0-0"},{"kind":"fixed","version":"4.1.8"},{"kind":"introduced","version":"4.2.0"},{"kind":"fixed","version":"4.2.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://crates.io/crates/ammonia","https://rustsec.org/advisories/RUSTSEC-2026-0373.html","https://github.com/rust-ammonia/ammonia/pull/267"],"sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0373","license":"OSV ยท upstream source license applies","key":"osv:RUSTSEC-2026-0373","identifiers":["RUSTSEC-2026-0373","GHSA-x43w-36pp-96g3"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T07:04:24.9567057+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-09T07:04:24.9567057+00:00","lastSuccessAt":"2026-11-09T07:04:25.1719597+00:00","error":null,"lastVerifiedAt":"2026-11-09T07:04:25.1719634+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-bac7baae6881807b2b4a9dce5cf5dd63af98be3e5c79f031b11fd288ebb8cee0","complete":true,"records":421301,"lastAttemptAt":"2026-11-09T07:02:23.0094052+00:00","lastSuccessAt":"2026-11-09T07:02:22.9878009+00:00","error":null,"lastVerifiedAt":"2026-11-09T07:02:23.0094052+00:00","snapshotPublishedAt":"2026-11-09T06:27:21+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-d2e3823747a845d48be4a8b64d8875b5","complete":false,"records":13654,"lastAttemptAt":"2026-11-09T07:16:41.1642648+00:00","lastSuccessAt":"2026-11-09T07:16:41.156+00:00","error":"14 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T07:16:41.156+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13677,"expectedIdentifiers":13706,"failedIdentifiers":14},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T07:04:24.9567057+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T07:04:24.9567057+00:00","lastSuccessAt":"2026-11-09T07:04:25.1726767+00:00","error":null,"lastVerifiedAt":"2026-11-09T07:04:25.1726768+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-156d67f0b09643159ff4bd684ee896db","complete":true,"records":13666,"lastAttemptAt":"2026-11-09T07:04:26.2116374+00:00","lastSuccessAt":"2026-11-09T07:04:26.209+00:00","error":null,"lastVerifiedAt":"2026-11-09T07:04:26.209+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T07:04:24.7370556+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T07:04:24.7370556+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T07:02:23.2085789+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-09T07:02:23.2085789+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-f6d341f4320a5a0c059c28102ee651c3dd06abc87b84d2bafa4e2a823ec07d35","complete":true,"records":3056,"lastAttemptAt":"2026-11-09T07:04:24.9218065+00:00","lastSuccessAt":"2026-11-09T05:02:23.1539412+00:00","error":null,"lastVerifiedAt":"2026-11-09T07:04:24.9218065+00:00","snapshotPublishedAt":"2026-11-09T04:47:48+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-32fcf2a839d0d91a36b31c98096d6b8a1a8cc523d64745f8a939e306130e49f2","complete":true,"records":231296,"lastAttemptAt":"2026-11-09T07:04:24.6113442+00:00","lastSuccessAt":"2026-11-09T07:04:23.2641171+00:00","error":null,"lastVerifiedAt":"2026-11-09T07:04:24.6113442+00:00","snapshotPublishedAt":"2026-11-09T06:48:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}