CVE-2026-111274
mediumunarr 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.
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.
CVSS
5.5
5.5 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-10-15 22:19
Modified: 2026-10-23 20:17
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 07:03 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/selmf/unarr disclosure@vulncheck.com
- https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/zip/parse-zip... disclosure@vulncheck.com
- https://hackmd.io/@haind-pwn/unarr-tar-zip-oob disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/unarr-through-1.1.1-heap-out-of-bounds-read-via-zip-p... disclosure@vulncheck.com
- https://hackmd.io/@haind-pwn/unarr-tar-zip-oob 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:03 UTC · record ↗