Medium severity · published Sep 8, 2026
CVE-2026-74859
Gnome-tweaks: path traversal in theme installer
6.8
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-74859
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-74859
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-74859
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2529702
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