CVE-2026-111274

EUVD-2026-102529
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.5 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Debian logo
Debian Releases
Debian Product
Codename
unarr
bookworm
undetermined
Common Weakness Enumeration
References
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