{"id":"CVE-2026-68921","aliases":["GHSA-gcr2-9v8m-gq45"],"url":"https://o3.security/vulnerability/CVE-2026-68921","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 `<image onerror>` 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.","published":"2026-08-20T21:08:43.813Z","modified":"2026-09-20T11:47:25.541499587Z","cvss":{"score":4.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.00222,"percentile":0.1297,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@dicebear/core","fixedVersion":"9.4.3"},{"ecosystem":"npm","name":"@dicebear/initials","fixedVersion":"9.4.3"}],"fix":{"url":"https://github.com/dicebear/dicebear/commit/922946d738c4e77ab6c412e27ede75941fec4b59","label":"dicebear/dicebear@922946d"},"references":[{"type":"WEB","url":"https://github.com/dicebear/dicebear/releases/tag/v9.4.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68921.json"},{"type":"ADVISORY","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":"FIX","url":"https://github.com/dicebear/dicebear/commit/922946d738c4e77ab6c412e27ede75941fec4b59"},{"type":"PACKAGE","url":"https://github.com/dicebear/dicebear"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-20T11:47:25.541499587Z"}}