Vulnerability · Published Sep 8, 2026 · Assigned by redhat
CVE-2026-74859Gnome-tweaks: path traversal in theme installer
Medium 6.8
In plain English
A medium-severity path traversal in Red Hat Enterprise Linux 8 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.2%top 93.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | gnome-tweaks | no fix listed | DEBIAN-CVE-2026-74859 |
| Debian:13 | gnome-tweaks | no fix listed | DEBIAN-CVE-2026-74859 |
| Debian:14 | gnome-tweaks | no fix listed | DEBIAN-CVE-2026-74859 |
| Ubuntu:22.04:LTS | gnome-tweaks | no fix listed | UBUNTU-CVE-2026-74859 |
| Ubuntu:24.04:LTS | gnome-tweaks | no fix listed | UBUNTU-CVE-2026-74859 |
| Ubuntu:26.04:LTS | gnome-tweaks | no fix listed | UBUNTU-CVE-2026-74859 |
| Ubuntu:26.10 | gnome-tweaks | no fix listed | UBUNTU-CVE-2026-74859 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:H
References
- https://access.redhat.com/security/cve/CVE-2026-74859 vdb-entry, x_refsource_REDHAT
- RHBZ#2529702 issue-tracking, x_refsource_REDHAT