Detections
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Linux Distros Unpatched Vulnerability : CVE-2026-40354
medium Nessus Plugin ID 306028
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Synopsis
The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.Description
The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.- 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. (CVE-2026-40354)
Note that Nessus relies on the presence of the package as reported by the vendor.
Solution
There is no known solution at this time.See Also
https://access.redhat.com/security/cve/cve-2026-40354
Plugin Details
Severity: Medium
ID: 306028
File Name: unpatched_CVE_2026_40354.nasl
Version: 1.5
Type: Local
Agent: unix
Family: Misc.
Published: 4/11/2026
Updated: 5/5/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 4.7
Vector: CVSS2#AV:L/AC:H/Au:S/C:N/I:C/A:C
CVSS Score Source: CVE-2026-40354
CVSS v3
Risk Factor: Medium
Base Score: 6.3
Temporal Score: 5.8
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C
Vulnerability Information
CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:debian:debian_linux:12.0, cpe:/o:canonical:ubuntu_linux:25.10, cpe:/o:redhat:enterprise_linux:9, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:xdg-desktop-portal-devel, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:xdg-desktop-portal, p-cpe:/a:redhat:enterprise_linux:xdg-desktop-portal, p-cpe:/a:centos:centos:xdg-desktop-portal, cpe:/o:centos:centos:7, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:xdg-desktop-portal-devel, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:xdg-desktop-portal
Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier
Exploit Ease: No known exploits are available
Vulnerability Publication Date: 4/11/2026
Reference Information
CVE: CVE-2026-40354