CVE-2026-33418 — @dicebear / converter
Incorrect Regular ExpressionDiceBear is an avatar library for designers and developers. Prior to version 9.4.2, the ensureSize() function in @dicebear/converter used a regex-based approach to rewrite SVG width/height attributes, capping them at 2048px to prevent denial of service. This size capping could be bypassed by crafting SVG input that causes the regex to match a non-functional occurrence of <svg before the actual SVG root element. When the SVG is subsequently rendered via @resvg/resvg-js on the Node.js code path, it renders at the attacker-specified dimensions, potentially causing out-of-memory crashes. In version 9.4.2, the regex-based approach has been replaced with XML-aware processing using fast-xml-parser to correctly identify and modify the SVG root element's attributes. Additionally, a fitTo constraint has been added to the renderAsync call as defense-in-depth, ensuring the rendered output is always bounded regardless of SVG content.
| Software | From | Fixed in |
|---|---|---|
@dicebear / converter
|
- | 9.4.2 |
| dicebear / dicebear | - | 9.4.2 |
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