medium6.8
CVE-2026-111274
unarr through 1.1.1 contains a heap-based out-of-bounds read in zip_parse_extra_fields() in zip/parse-zip.c due to an incorrect ZIP64 extra field length check.
Impact
unarr through 1.1.1 contains a heap-based out-of-bounds read in zip_parse_extra_fields() in zip/parse-zip.c due to an incorrect ZIP64 extra field length check. Attackers can supply a crafted ZIP archive with 0xFFFFFFFF sentinel values and a truncated ZIP64 record to read past the heap buffer and crash the process.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Selmf | Unarr | Version 0 ≤1.1.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/selmf/unarr
- https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/zip/parse-zip.c#L48-L72
- https://hackmd.io/@haind-pwn/unarr-tar-zip-oob
- https://www.vulncheck.com/advisories/unarr-through-1.1.1-heap-out-of-bounds-read-via-zip-parse-extra-fields
- https://github.com/advisories/GHSA-rj75-52m6-37p5
- https://nvd.nist.gov/vuln/detail/CVE-2026-111274
- https://github.com/selmf/unarr/security/advisories/GHSA-qm4g-jf39-jwjj
- https://github.com/selmf/unarr/releases/tag/v1.2.0