CVE-2026-111274

unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields

Published Oct 15, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Selmf
Selmf unarr
Vendors & Products Selmf
Selmf unarr
Type Values Removed Values Added
Description 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.
Title unarr through 1.1.1 Heap Out-of-Bounds Read via zip_parse_extra_fields
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 2, 2026, 2:21 AM
Reserved
Oct 15, 2026, 7:33 PM
Status
Deferred
Published
Oct 15, 2026, 10:19 PM
Modified
Nov 2, 2026, 3:17 AM