CVE-2026-18508: Tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite
Overview
- Severity
- Medium (CVSS 4.4)
- CVSS Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Aug
- Released
- 2026-08-07
- EPSS Score
- 0.13% (percentile: 3.1%)
Affected Products (1)
Open Source Software
- azl3 tar 1.35-2 on Azure Linux 3.0
Revision History
- 2026-08-07: Information published.