VDB
CVE-2026-49271
CVE-2026-49271
PUBLISHED
CVSS 6.5 MEDIUM
Reported by GitHub_M · Published June 19, 2026
libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.1, the uncompressed HEIF decoder validates explicit icef compressed-unit offsets using unit_offset + unit_size. Because the addition can wrap, a crafted HEIF file can pass the range check and then construct a vector from iterators outside the compressed item buffer, producing an out-of-bounds heap read and crash. Version 1.22.1 patches the issue.
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| strukturag | libheif | < 1.22.1 |
| strukturag | libheif | < 1.22.1, < 1.22.1 |
Timeline
- Jun 19, 2026 CVE Published
- Jun 20, 2026 Coalition ESS Score
- Jun 22, 2026 CVE Updated
- Jun 23, 2026 Security Advisory
References
- https://github.com/strukturag/libheif/security/advisories/GHSA-r7qj-cg5r-r6vf x_refsource_CONFIRM