CVE-2025-71330: image-size: ICNS parser allows denial of service through an infinite loop
(updated )
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 ICNS image buffer. Attackers can craft an ICNS buffer containing valid magic bytes and a zero-valued entry length field to trigger an infinite loop in the ICNS parser, as the offset is never incremented when the entry length field is 0, causing the while loop condition to remain true indefinitely.
References
- codeberg.org/image-size/image-size/commit/e6e83a5578961de81f6d5834d90fb7430d8f29a5
- github.com/advisories/GHSA-w3rx-r6r6-pgpr
- joshua.hu/image-size-infinite-loop-dos-vulnerabilities
- nvd.nist.gov/vuln/detail/CVE-2025-71330
- web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439
- www.vulncheck.com/advisories/image-size-denial-of-service-via-malformed-icns-image-parsing
Code Behaviors & Features
Detect and mitigate CVE-2025-71330 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →