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. 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 v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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://hackmd.io/@haind-pwn/unarr-tar-zip-oob

Configurations

No configuration.

History

23 Oct 2026, 20:17

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@haind-pwn/unarr-tar-zip-oob -~~	() https://hackmd.io/@haind-pwn/unarr-tar-zip-oob -

15 Oct 2026, 22:19

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-15 22:19

Updated : 2026-10-23 20:17

NVD link : CVE-2026-111274

Mitre link : CVE-2026-111274

CVE.ORG link : CVE-2026-111274

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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