CVE-2026-74859

6.8 mediumEPSS 0.2%

Medium (6.8). EPSS 0.2% chance of exploitation in the next 30 days.

The shell theme installer in gnome-tweaks extracts user-supplied ZIP archives without validating archive member paths. As a result, a crafted theme archive can write files outside ~/.themes by using ../ path traversal, absolute paths, or symlink entries.

Severity

CVSS 3.1

6.8 medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-31)
CWE: CWE-22
Published: 2026-09-08
Modified: 2026-09-09
Record from: the NVD, synced 2026-10-19

References

https://access.redhat.com/security/cve/CVE-2026-74859
https://bugzilla.redhat.com/show_bug.cgi?id=2529702

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