Medium 5.5Published Oct 15, 2026

CVE-2026-111274unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields

Updated under an hour ago (2026-10-19 06:30 UTC)

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It affects selmf unarr. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for selmf unarr

Exploited in the last 30 days

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 MEDIUM (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 15, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

selmf unarr selmf:unarr (from the name)	through 1.1.1	CNA record

References

https://hackmd.io/@haind-pwn/unarr-tar-zip-oobtechnical-description
https://github.com/selmf/unarr/blob/b211040df83dee513362cdeb9bd87afa26fd5e38/zip/parse-zip.c#L48-L72technical-description
https://github.com/selmf/unarrproduct
https://www.vulncheck.com/advisories/unarr-through-1.1.1-heap-out-of-bounds-read-via-zip-parse-extra-fieldsthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.