GHSA-v3r3-4qgc-vw66 · Severity: high · Ecosystem: npm — Uncontrolled memory allocation via crafted SVG dimensions in @dicebear/converter
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.
Conclusion & alert: CVE-2026-29112 is rated Low Risk (36/100): CVSS High severity, with low exploitation likelihood (EPSS 0.06%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-24 | 0.04% | 0.06% | +0.02% |
| 2 | 2026-03-18 | — | 0.04% | — |
Full EPSS history (2 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-v3r3-4qgc-vw66 · Severity: high · Ecosystem: npm — Uncontrolled memory allocation via crafted SVG dimensions in @dicebear/converter
| URL | Tags |
|---|---|
| https://github.com/dicebear/dicebear/commit/42a59eac46a3c68598859e608ec45e578b27614a | Patch |
| https://github.com/dicebear/dicebear/releases/tag/v9.4.0 | Product Release Notes |
| https://github.com/dicebear/dicebear/security/advisories/GHSA-v3r3-4qgc-vw66 | Mitigation Vendor Advisory |