GitHub Advisoryadvisory · npm

GHSA-5p2g-fcmc-qvqq image-size: JXL and HEIF parsers allow denial of service through infinite loops

HIGH Published 2026-06-10 Modified 2026-09-24 Official page ↗
Aliases
CVE-2025-71329
Ecosystem
npm
Packages
image-size
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-835
Reviewed
2026-08-07

Affected packages

• npm image-size: >= 1.2.0, < 2.0.3 → fixed in 2.0.3

Description

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.

Related

Alias · CVE (1)

  • CVE-2025-71329 image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanently block the Node.js event… vulnerability

Weakness · CWE (1)

  • CWE-835 Loop with Unreachable Exit Condition weakness

References