CVE-2025-71319

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.

• CWE-835
• CWE-835

• https://joshua.hu/image-size-infinite-loop-dos-vulnerabilitiesExploit, Third Party Advisory
• https://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439Issue Tracking, Patch
• https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parserThird Party Advisory
• https://access.redhat.com/errata/RHSA-2026:33313Third Party Advisory
• https://access.redhat.com/errata/RHSA-2026:37272Third Party Advisory
• https://access.redhat.com/security/cve/CVE-2025-71319Third Party Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2487296Issue Tracking, Third Party Advisory
• https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-71319.jsonThird Party Advisory

Published

Jun 9, 2026

Last Modified

Jul 24, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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