Detections
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Debian dsa-6510 : xdg-dbus-proxy - security update
high Nessus Plugin ID 349467
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Synopsis
The remote Debian host is missing a security-related update.Description
The remote Debian 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6510 advisory.- ------------------------------------------------------------------------- Debian Security Advisory DSA-6510-1 [email protected] https://www.debian.org/security/ Alberto Garcia September 23, 2026 https://www.debian.org/security/faq
- -------------------------------------------------------------------------
Package : xdg-dbus-proxy CVE ID : CVE-2026-94422 Debian Bug : 1148782
It was discovered that an incorrect implementation of message filtering in xdg-dbus-proxy allows an attacker to bypass the intended message filtering on the D-Bus session bus by setting a reply serial number on non-reply messages.
A malicious or compromised Flatpak app could achieve arbitrary code execution outside its sandbox.
If other app frameworks rely on xdg-dbus-proxy in the same way that Flatpak does, then they will have an equivalent vulnerability until xdg-dbus-proxy is updated.
For the stable distribution (trixie), this problem has been fixed in version 0.1.6-1+deb13u3.
We recommend that you upgrade your xdg-dbus-proxy packages.
For the detailed security status of xdg-dbus-proxy please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/xdg-dbus-proxy
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/
Mailing list: [email protected]
Tenable has extracted the preceding description block directly from the Debian security advisory.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade the xdg-dbus-proxy packages.See Also
https://packages.debian.org/source/trixie/xdg-dbus-proxy
Plugin Details
Severity: High
ID: 349467
File Name: debian_DSA-6510.nasl
Version: 1.2
Type: Local
Agent: unix
Family: Debian Local Security Checks
Published: 9/23/2026
Updated: 10/5/2026
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: High
Score: 7.6
Percentile: 98.25
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2026-94422
CVSS v3
Risk Factor: High
Base Score: 8.8
Temporal Score: 7.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: High
Base Score: 8.7
Threat Score: 6.3
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Vulnerability Information
CPE: cpe:/o:debian:debian_linux:13.0, p-cpe:/a:debian:debian_linux:xdg-dbus-proxy-tests, p-cpe:/a:debian:debian_linux:xdg-dbus-proxy
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Ease: No known exploits are available
Patch Publication Date: 9/23/2026
Vulnerability Publication Date: 9/23/2026
Reference Information
CVE: CVE-2026-94422