Path traversal in PackageKit - #VU148899
Published: September 10, 2026
Vulnerability identifier: #VU148899
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges.
The vulnerability exists due to improper path validation and symlink following in the PackageKit dnf5 backend and libdnf5 TempFilesMemory temporary-file tracking logic when processing crafted unauthenticated D-Bus transactions. A local user can supply a path-traversal distro identifier and create a symlink to cause a root-owned file overwrite and escalate privileges.
Exploitation requires access to the system D-Bus from a standard local user session.
Affected software
PackageKit
Remediation
Install security update from vendor's website.
PackageKit - update to 1.4.0