CVE-2026-18508
tarVulnerabilityCVSS 4.4
No public exploitation has been reported so far. No distribution fix is listed yet; apply vendor mitigations and monitor.
Recommended action: Track your distribution's security tracker and apply the fix as soon as it ships.
Severity metrics
CVSS 3.1 : 4.4 MEDIUM
Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
Confidentiality impactLow
Integrity impactLow
Availability impactNone
Vector: AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
| Distribution | Package | Affected | Fixed version | Status |
|---|---|---|---|---|
| Debian:11 | tar | - | - | affected (no fix yet) |
| Debian:12 | tar | - | - | affected (no fix yet) |
| Debian:13 | tar | - | - | affected (no fix yet) |
| Debian:14 | tar | - | - | affected (no fix yet) |