{"id":"GHSA-cg87-wmx4-v546","summary":"KaTeX \\htmlData does not validate attribute names","details":"### Impact\nKaTeX users who render untrusted mathematical expressions with `renderToString` could encounter malicious input using `\\htmlData` that runs arbitrary JavaScript, or generate invalid HTML.\n\n### Patches\nUpgrade to KaTeX v0.16.21 to remove this vulnerability.\n\n### Workarounds\n- Avoid use of or turn off the `trust` option, or set it to forbid `\\htmlData` commands.\n- Forbid inputs containing the substring `\"\\\\htmlData\"`.\n- Sanitize HTML output from KaTeX.\n\n### Details\n`\\htmlData` did not validate its attribute name argument, allowing it to generate invalid or malicious HTML that runs scripts.\n\n### For more information\nIf you have any questions or comments about this advisory:\n\n- Open an issue or security advisory in the [KaTeX repository](https://github.com/KaTeX/KaTeX/)\n- Email us at [katex-security@mit.edu](mailto:katex-security@mit.edu)","aliases":["CVE-2025-23207"],"modified":"2025-01-21T18:31:02Z","published":"2025-01-17T21:22:56Z","database_specific":{"github_reviewed_at":"2025-01-17T21:22:56Z","nvd_published_at":"2025-01-17T22:15:29Z","cwe_ids":["CWE-116","CWE-79"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/KaTeX/KaTeX/security/advisories/GHSA-cg87-wmx4-v546"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-23207"},{"type":"WEB","url":"https://github.com/KaTeX/KaTeX/commit/ff289955e81aab89086eef09254cbf88573d415c"},{"type":"PACKAGE","url":"https://github.com/KaTeX/KaTeX"}],"affected":[{"package":{"name":"katex","ecosystem":"npm","purl":"pkg:npm/katex"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.12.0"},{"fixed":"0.16.21"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 0.16.20","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/01/GHSA-cg87-wmx4-v546/GHSA-cg87-wmx4-v546.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L"}]}