CVE-2026-29112

描述

### Impact The `ensureSize()` function in `@dicebear/converter` (versions < 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. 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. ### Patches 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. ### Workarounds 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.

如何修補 CVE-2026-29112

要修補 CVE-2026-29112,請將受影響套件升級到下列已修補版本。

• —升級至 9.4.0 或更新版本

CVE-2026-29112 正在被利用嗎?

低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 9.4.0

CVSS 分數