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Affected Component
Analysis
tar
Exploitable
Name
CVE-2026-18508
Description
A flaw was found in GNU tar. When extracting an archive with the --one-top-level option, hardlink targets are not confined to the designated top-level directory and may resolve relative to the extraction working directory. A crafted archive can create hardlinks that escape the intended boundary and, when combined with a preexisting symbolic link under the working directory, may allow writing outside that boundary during a single extraction.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://access.redhat.com/errata/RHSA-2026:50807Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-18508Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2509843Issue Tracking
Analysis#
Vulnerability Ratings#
4.4
CVSSv31
NaN
other