CVE-2026-40354

Name: CVE-2026-40354
Creator: NVD / NIST
Published: 2026-04-11T01:16:16.27+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10EPSS 0.13%

Last modified Jun 17, 2026

CVE-2026-40354 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. Flatpak xdg-desktop-portal before 1.20.4 and 1.21.x before 1.21.1 allows any Flatpak app to trash any file in the host context via a symlink attack on g_file_trash.. EPSS estimates a 0.13% chance of exploitation in the next 30 days.

Description

Flatpak xdg-desktop-portal before 1.20.4 and 1.21.x before 1.21.1 allows any Flatpak app to trash any file in the host context via a symlink attack on g_file_trash.

Metrics

CVSS 3.1

6.3/10

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS Probability

0.13%

2.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-61

Affected Software

Vendor	Product	Versions
Flatpak	Xdg-Desktop-Portal	< 1.20.4
Flatpak	Xdg-Desktop-Portal	1.21.0

References

Timeline

Published: Apr 11, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-40354?

Flatpak xdg-desktop-portal before 1.20.4 and 1.21.x before 1.21.1 allows any Flatpak app to trash any file in the host context via a symlink attack on g_file_trash.

How severe is CVE-2026-40354?

CVE-2026-40354 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.

How do I fix CVE-2026-40354?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-40354?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST