MEDIUM 4.4 Microsoft
CVE-2026-18508
Tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite
Microsoft Security Update 2026-Aug: Tar: tar: --one-top-level hardlink targets not confined to top-level directory enabling arbitrary file overwrite
Affected Products
- azl3 tar 1.35-2 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-18508
- https://nvd.nist.gov/vuln/detail/CVE-2026-18508
This medium severity vulnerability with a CVSS score of 4.4 was published on 2026-08-11 via Microsoft. Affected: azl3 tar 1.35-2 on Azure Linux 3.0.
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