CVE-2021-27804: Libjxl Project Libjxl

Critical severity, CVSS 9.8. EPSS: 4% chance of exploitation in the next 30 days.

JPEG XL (aka jpeg-xl) through 0.3.2 allows writable memory corruption.

Affected products

• Libjxl Project Libjxl: up to and including 0.3.2

Published 2021-03-02. Last modified 2026-06-17.