HIGH 7.5
GHSA-5p2g-fcmc-qvqq
image-size: JXL and HEIF parsers allow denial of service through infinite loops
Details
image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanently block the Node.js event loop by supplying a specially crafted image buffer with a zero-valued size field in a recognized box-type. Attackers can trigger an infinite loop in the JXL or HEIF image parsers by providing a crafted image containing a box with a size of zero, causing the offset to never advance and permanently hanging the application.
Are you affected?
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Affected packages
npm / image-size
Introduced in:
0 No fixed version published yet for image-size (npm). Pin to a known-safe version or switch to an alternative.
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-71329 [ADVISORY]
- https://github.com/image-size/image-size [PACKAGE]
- https://joshua.hu/image-size-infinite-loop-dos-vulnerabilities [WEB]
- https://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439 [WEB]
- https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parser [WEB]