{"id":"GHSA-xrqq-wqh4-5hg2","summary":"svg-sanitizer has Cross-site Scripting Bypass","details":"### Update\nIn [#88](https://github.com/darylldoyle/svg-sanitizer/issues/88) we have determined that the bypass this security advisory was created for, was a false positive and as such we have requested that the CVE be rejected.\n\n___\n\nA bypass has been found that allows an attacker to upload an SVG with persistent XSS.\n\nHTML elements within CDATA needed to be sanitized correctly, as we were converting them to a textnode and therefore, the library wasn't seeing them as DOM elements.\n\nAny data within a CDATA node will now be sanitised using [HTMLPurifier](https://github.com/ezyang/htmlpurifier). We've also removed many of the HTML and MathML elements from the allowed element list, as without `ForiegnObject`, they're not legal within the SVG context. \n\nAdditional tests have been added to the test suite to account for these new bypasses.\n\n### Impact\nThis impacts all users of the `svg-sanitizer` library.\n\n### Patches\nThis issue is fixed in 0.16.0 and higher.\n\n### Workarounds\nThere is currently no workaround available without upgrading.\n\n### For more information\nIf you have any questions or comments about this advisory:\n\nOpen an issue in [Github](https://github.com/darylldoyle/svg-sanitizer/issues)\nEmail us at [daryll@enshrined.co.uk](mailto:daryll@enshrined.co.uk)","aliases":["CVE-2023-28426"],"modified":"2026-09-10T03:49:53.109806357Z","published":"2023-03-20T20:44:30Z","withdrawn":"2023-03-23T12:50:28Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2023-03-20T20:44:30Z","nvd_published_at":"2023-03-20T14:15:00Z","cwe_ids":["CWE-79"]},"references":[{"type":"WEB","url":"https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-xrqq-wqh4-5hg2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-28426"},{"type":"WEB","url":"https://github.com/darylldoyle/svg-sanitizer/issues/88"},{"type":"WEB","url":"https://github.com/darylldoyle/svg-sanitizer/commit/cce18bc237c05c6e093e9672db7926788da9b322"},{"type":"PACKAGE","url":"https://github.com/darylldoyle/svg-sanitizer"}],"affected":[{"package":{"name":"enshrined/svg-sanitize","ecosystem":"Packagist","purl":"pkg:composer/enshrined/svg-sanitize"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.16.0"}]}],"versions":["0.1.0","0.1.1","0.1.2","0.1.3","0.1.4","0.1.5","0.1.6","0.10.0","0.11.0","0.12.0","0.13.0","0.13.1","0.13.2","0.13.3","0.14.0","0.14.1","0.15.0","0.15.1","0.15.2","0.15.3","0.15.4","0.2.0","0.2.1","0.3.0","0.4.0","0.4.1","0.5.0","0.5.1","0.5.2","0.5.3","0.5.3.1","0.6.0","0.7.0","0.7.1","0.7.2","0.8.0","0.8.1","0.8.2","0.9.0","0.9.1","0.9.2"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/03/GHSA-xrqq-wqh4-5hg2/GHSA-xrqq-wqh4-5hg2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}