CVE-2026-48700: Critical severity LXQt PCManFM-Qt vulnerability
An issue was discovered in all versions of PCManFM-Qt starting from 1.1.0. When a regular file's path is passed as a URI in an org.freedesktop.FileManager1.ShowFolders D-Bus method call, PCManFM-Qt delegates to a different program (based on the file type) without user confirmation. This could be used to achieve code execution or circumvent network namespace restrictions. NOTE: those outcomes are potentially unwanted by most users; however, the behavior of the product does comply with the applicable specification, and a simplistic solution (ensuring that the URI does not name a regular file) may have adverse consequences for I/O.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-48700?
CVE-2026-48700 has a risk rating of 57, indicating a moderate level of severity.
How do I fix CVE-2026-48700?
To mitigate CVE-2026-48700, ensure you update to the latest version of PCManFM-Qt where the issue has been addressed.
What systems are affected by CVE-2026-48700?
CVE-2026-48700 affects all versions of PCManFM-Qt starting from 1.1.0.
What types of files are impacted by CVE-2026-48700?
CVE-2026-48700 is triggered when regular file paths are passed as URIs in specific D-Bus method calls.
What is the nature of the risk associated with CVE-2026-48700?
The risk associated with CVE-2026-48700 involves the delegation of file handling to other programs without user confirmation.