Vulnerability Description
libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copied per branch and ImageItem::decode_image() has no shared operation budget. This vulnerability is fixed in 1.23.2.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/strukturag/libheif/commit/30b52a4e829efe0ee6d7208e8500b99f664
- https://github.com/strukturag/libheif/releases/tag/v1.23.2
- https://github.com/strukturag/libheif/security/advisories/GHSA-x8xm-cm2c-cfc8
- https://github.com/strukturag/libheif/security/advisories/GHSA-x8xm-cm2c-cfc8
FAQ
What is CVE-2026-84447?
CVE-2026-84447 is a vulnerability with a CVSS score of 7.5 (HIGH). libheif is a HEIF and AVIF file format decoder and encoder. In 1.23.1 and earlier, crafted grid, iovl, and iden reference graphs can repeatedly decode the same base image because processed_ids is copi...
How severe is CVE-2026-84447?
CVE-2026-84447 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-84447?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.