Vulnerability Description
libjxl before 0.12 contains an integer underflow vulnerability in the container box parser that allows remote attackers to inject arbitrary metadata by exploiting 64-bit box size truncation to size_t on 32-bit platforms. Attackers can supply a crafted JPEG XL file causing the decoder to parse attacker-controlled codestream bytes as phantom box headers, enabling injection of arbitrary metadata (Exif, XMP, IPTC, JUMBF) and potential out-of-bounds reads.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/libjxl/libjxl/commit/22ad80af1454f0444ea34115e49ed40517147d68
- https://github.com/libjxl/libjxl/pull/4885
- https://github.com/libjxl/libjxl/releases/tag/v0.12.0
- https://www.vulncheck.com/advisories/libjxl-container-box-parser-integer-underfl
FAQ
What is CVE-2026-82522?
CVE-2026-82522 is a vulnerability with a CVSS score of 5.4 (MEDIUM). libjxl before 0.12 contains an integer underflow vulnerability in the container box parser that allows remote attackers to inject arbitrary metadata by exploiting 64-bit box size truncation to size_t ...
How severe is CVE-2026-82522?
CVE-2026-82522 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-82522?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.