CVE-2021-36691: Libjxl Project Libjxl

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

libjxl v0.5.0 is affected by a Assertion failed issue in lib/jxl/image.cc jxl::PlaneBase::PlaneBase(). When encoding a malicous GIF file using cjxl, an attacker can trigger a denial of service.

Affected products

• Libjxl Project Libjxl: version 0.5.0 only

Published 2021-08-30. Last modified 2026-06-17.