{"id":"GHSA-v3r3-4qgc-vw66","summary":"Uncontrolled memory allocation via crafted SVG dimensions in @dicebear/converter","details":"### Impact\n\nThe `ensureSize()` function in `@dicebear/converter` (versions \u003c 9.4.0) 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.\n\nThis 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.\n\n### Patches\n\nFixed 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.\n\n### Workarounds\n\nIf upgrading is not immediately possible, validate and sanitize the `width` and `height` attributes of any untrusted SVG input before passing it to the converter.","aliases":["CVE-2026-29112"],"modified":"2026-03-19T21:17:23.205733Z","published":"2026-03-16T16:15:33Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-03-16T16:15:33Z","nvd_published_at":"2026-03-18T04:17:16Z","cwe_ids":["CWE-770"],"severity":"HIGH"},"references":[{"type":"WEB","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":"WEB","url":"https://github.com/dicebear/dicebear/commit/42a59eac46a3c68598859e608ec45e578b27614a"},{"type":"PACKAGE","url":"https://github.com/dicebear/dicebear"},{"type":"WEB","url":"https://github.com/dicebear/dicebear/releases/tag/v9.4.0"}],"affected":[{"package":{"name":"@dicebear/converter","ecosystem":"npm","purl":"pkg:npm/%40dicebear/converter"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"9.4.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-v3r3-4qgc-vw66/GHSA-v3r3-4qgc-vw66.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:N/I:N/A:H"}]}