{"id":"CVE-2026-29112","aliases":["GHSA-v3r3-4qgc-vw66"],"url":"https://o3.security/vulnerability/CVE-2026-29112","summary":"@dicebear/converter vulnerable to ncontrolled memory allocation via crafted SVG dimensions","details":"DiceBear is an avatar library for designers and developers. Prior to version 9.4.0, the `ensureSize()` function in `@dicebear/converter` read the `width` and `height` attributes from the input SVG to determine the output canvas size for rasterization (PNG, JPEG, WebP, AVIF). An attacker who can supply a crafted SVG with extremely large dimensions (e.g. `width=\"999999999\"`) could force the server to allocate excessive memory, leading to denial of service. This primarily affects server-side applications that pass untrusted or user-supplied SVGs to the converter's `toPng()`, `toJpeg()`, `toWebp()`, or `toAvif()` functions. Applications that only convert self-generated DiceBear avatars are not practically exploitable, but are still recommended to upgrade. This is fixed in version 9.4.0. The `ensureSize()` function no longer reads SVG attributes to determine output size. Instead, a new `size` option (default: 512, max: 2048) controls the output dimensions. Invalid values (NaN, negative, zero, Infinity) fall back to the default. If upgrading is not immediately possible, validate and sanitize the `width` and `height` attributes of any untrusted SVG input before passing it to the converter.","published":"2026-03-18T02:19:56.503Z","modified":"2026-08-12T03:51:27.792363398Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"@dicebear/converter","fixedVersion":"9.4.0"}],"fix":{"url":"https://github.com/dicebear/dicebear/commit/42a59eac46a3c68598859e608ec45e578b27614a","label":"dicebear/dicebear@42a59ea"},"references":[{"type":"WEB","url":"https://github.com/dicebear/dicebear/releases/tag/v9.4.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29112.json"},{"type":"ADVISORY","url":"https://github.com/dicebear/dicebear/security/advisories/GHSA-v3r3-4qgc-vw66"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-29112"},{"type":"FIX","url":"https://github.com/dicebear/dicebear/commit/42a59eac46a3c68598859e608ec45e578b27614a"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:27.792363398Z"}}