CVE-2026-32739

libheif is a HEIF and AVIF file format decoder and encoder. In versions 1.21.2 and below, a crafted 800-byte HEIF sequence file causes an infinite loop in Box_stts::get_sample_duration(), consuming 100% CPU indefinitely with zero progress, leading to DoS. The loop has no iteration limit or timeout and is triggered during file open (parsing) - before any user interaction or image decoding. The process stays alive (no crash, no error logged), making it invisible to crash-based monitoring. This issue has been fixed in version 1.22.0.

• CWE-835

• https://github.com/strukturag/libheif/releases/tag/v1.22.0Release Notes
• https://github.com/strukturag/libheif/security/advisories/GHSA-j9g7-q9hv-gq8cExploit, Vendor Advisory
• https://github.com/strukturag/libheif/security/advisories/GHSA-j9g7-q9hv-gq8cExploit, Vendor Advisory

Published

May 19, 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.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-32733Halloy is an IRC application written in Rust. Prior to commi…6.5
• CVE-2026-32734baserCMS is a website development framework. Prior to versio…6.1
• CVE-2026-32735openapi-to-java-records-mustache-templates allows users to g…2.3
• CVE-2026-32736The Hytale Modding Wiki is a free service for Hytale mods to…4.3
• CVE-2026-32737Romeo gives the capability to reach high code coverage of Go…10
• CVE-2026-32738libheif is a HEIF and AVIF file format decoder and encoder. …6.5
• CVE-2026-3274A security flaw has been discovered in Tenda F453 1.0.0.3. A…8.8
• CVE-2026-32740libheif is a HEIF and AVIF file format decoder and encoder. …8.8
• CVE-2026-32741libheif is a HEIF and AVIF file format decoder and encoder. …7.1
• CVE-2026-32742Parse Server is an open source backend that can be deployed …4.3
• CVE-2026-32743PX4 is an open-source autopilot stack for drones and unmanne…6.5
• CVE-2026-32745In JetBrains Datalore before 2026.1 session hijacking was po…5.7