{"id":"GHSA-gcr2-9v8m-gq45","summary":"DiceBear: SVG injection via the unescaped rotate option in @dicebear/core (and fontSize/fontWeight in @dicebear/initials)","details":"## Summary\n\n`@dicebear/core` builds avatar SVGs from caller-supplied options. The numeric `rotate` option is interpolated into an SVG `transform` attribute without XML-escaping. It is typed as a number, but nothing checks the type at runtime, so a string value passes straight through and can break out of the attribute to inject arbitrary SVG markup.\n\nThis is the same root cause as CVE-2026-33311 (GHSA-mr9r-mww3-v6gv), which escaped the string options `backgroundColor`, `fontFamily`, and `textColor` but did not cover `rotate`. `@dicebear/initials` has the same gap in its numeric `fontSize` and `fontWeight` options.\n\n## Impact\n\nCross-site scripting (CWE-79). When the generated avatar is rendered inline (for example via `innerHTML`) or served as `image/svg+xml` and opened directly, injected markup such as an `\u003cimage onerror\u003e` handler runs script in the page's origin.\n\nExploitation requires the application to pass untrusted input into one of these options:\n\n- `rotate` (`@dicebear/core`)\n- `fontSize`, `fontWeight` (`@dicebear/initials`)\n\nIn most integrations these options are set by the developer and only `seed` is user-controlled, so the vulnerable configuration is uncommon. Applications that use trusted, hardcoded values for these options are not at risk.\n\n## Patches\n\nFixed in `@dicebear/core` 9.4.3 and `@dicebear/initials` 9.4.3: the values are now XML-escaped before being written into the SVG, matching the CVE-2026-33311 fix. Upgrade to 9.4.3 or later.\n\nThe 5.x through 8.x lines share the same flaw but are end-of-life and will not receive a backport; upgrade to 9.4.3. The 10.x line is not affected.\n\n## Workarounds\n\nIf you cannot upgrade, coerce the affected options to a number before passing them to `createAvatar`:\n\n```js\nrotate: Number(userInput) || 0,\n```\n\n## Credits\n\nReported by @rz1027.","aliases":["CVE-2026-68921"],"modified":"2026-09-17T05:15:04.654136006Z","published":"2026-09-02T22:44:25Z","database_specific":{"nvd_published_at":"2026-08-20T21:17:07Z","cwe_ids":["CWE-184","CWE-79"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-09-02T22:44:25Z"},"references":[{"type":"WEB","url":"https://github.com/dicebear/dicebear/security/advisories/GHSA-gcr2-9v8m-gq45"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68921"},{"type":"WEB","url":"https://github.com/dicebear/dicebear/commit/922946d738c4e77ab6c412e27ede75941fec4b59"},{"type":"PACKAGE","url":"https://github.com/dicebear/dicebear"},{"type":"WEB","url":"https://github.com/dicebear/dicebear/releases/tag/v9.4.3"}],"affected":[{"package":{"name":"@dicebear/core","ecosystem":"npm","purl":"pkg:npm/%40dicebear/core"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"9.4.3"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 9.4.2","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-gcr2-9v8m-gq45/GHSA-gcr2-9v8m-gq45.json"}},{"package":{"name":"@dicebear/initials","ecosystem":"npm","purl":"pkg:npm/%40dicebear/initials"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"9.4.3"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 9.4.2","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-gcr2-9v8m-gq45/GHSA-gcr2-9v8m-gq45.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}