CVE Catalog

CVE-2026-74859

MediumCVSS 6.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.17%

7th percentile - higher than 7% of all known CVEs

Summary

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.

Risk Assessment

A user might inadvertently install a malicious theme, potentially leading to overwriting important system files or enabling an attacker to execute code in the user's context.

Recommendation

Update gnome-tweaks to a version that includes the path validation fix. Avoid installing themes from untrusted sources.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS