{"id":"CVE-2025-71329","aliases":["GHSA-5p2g-fcmc-qvqq"],"title":"image-size: JXL and HEIF parsers allow denial of service through infinite loops","summary":"image-size: JXL and HEIF parsers allow denial of service through infinite loops","severity":"high","cvss":7.5,"cwe":["CWE-835"],"vendor":"image-size","product":"image-size","ecosystem":"npm","affected":["image-size >= 1.2.0, <= 2.0.2"],"patched":["image-size 2.0.3"],"published":"2026-06-10","updated":"2026-09-24","sourceUpdated":"2026-09-24T18:28:06Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-5p2g-fcmc-qvqq","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-71329"},{"url":"https://joshua.hu/image-size-infinite-loop-dos-vulnerabilities"},{"url":"https://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439"},{"url":"https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parser"},{"url":"https://codeberg.org/image-size/image-size/commit/e6e83a5578961de81f6d5834d90fb7430d8f29a5"},{"url":"https://github.com/advisories/GHSA-5p2g-fcmc-qvqq"}],"tags":["ghsa","npm","exploit-available"],"epss":0.0043,"epssPercentile":0.34629,"exploits":{"github":1,"githubRepos":["https://github.com/lcf2212dev/image-size-next"],"checkedAt":"2026-09-26T09:05:36.296Z"},"exploitAvailable":true,"ingestedAt":"2026-09-24T18:49:36.713Z","slug":"CVE-2025-71329","body":"## Overview\n\nimage-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.\n\n## Affected packages\n\n- `image-size >= 1.2.0, <= 2.0.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `image-size 2.0.3`","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}