CVE-2021-22563: Libjxl Project Libjxl

Medium severity, CVSS 4.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Invalid JPEG XL images using libjxl can cause an out of bounds access on a std::vector<std::vector<T>> when rendering splines. The OOB read access can either lead to a segfault, or rendering splines based on other process memory. It is recommended to upgrade past 0.6.0 or patch with https://github.com/libjxl/libjxl/pull/757

Affected products

• Libjxl Project Libjxl: before 0.6.0 (fixed in 0.6.0)

Published 2021-11-01. Last modified 2026-06-17.