unarr through 1.1.1 contains an off-by-one heap-based buffer overflow in tar_get_name() in tar/parse-tar.c, reachable through the ar_entry_get_name() API. Attackers can supply a crafted TAR archive with a full ustar prefix and name to write a NUL byte past the allocation, corrupting heap memory and crashing the process.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 19 Oct 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Selmf
Selmf unarr
Vendors & Products Selmf
Selmf unarr

Fri, 16 Oct 2026 20:30:00 +0000

Type Values Removed Values Added
References
Metrics ssvc

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


Thu, 15 Oct 2026 22:00:00 +0000

Type Values Removed Values Added
Description unarr through 1.1.1 contains an off-by-one heap-based buffer overflow in tar_get_name() in tar/parse-tar.c, reachable through the ar_entry_get_name() API. Attackers can supply a crafted TAR archive with a full ustar prefix and name to write a NUL byte past the allocation, corrupting heap memory and crashing the process.
Title unarr through 1.1.1 Off-by-One Heap Buffer Overflow via tar_get_name
Weaknesses CWE-193
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-16T19:39:08.849Z

Reserved: 2026-10-15T19:33:20.652Z

Link: CVE-2026-111273

cve-icon Vulnrichment

Updated: 2026-10-16T19:38:57.340Z

cve-icon NVD

Status : Deferred

Published: 2026-10-15T22:19:28.333

Modified: 2026-10-16T20:17:19.853

Link: CVE-2026-111273

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T12:55:39Z

Weaknesses