CVE-2026-34080

xdg-dbus-proxy is a filtering proxy for D-Bus connections. Prior to 0.1.7, a policy parser vulnerability allows bypassing eavesdrop restrictions. The proxy checks for eavesdrop=true in policy rules but fails to handle eavesdrop ='true' (with a space before the equals sign) and similar cases. Clients can intercept D-Bus messages they should not have access to. This vulnerability is fixed in 0.1.7.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/flatpak/xdg-dbus-proxy/security/advisories/GHSA-vjp5-hjfm-7677	Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/10/15	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2026/04/msg00022.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:flatpak:xdg-dbus-proxy:*:*:*:*:*:*:*:*

History

21 Apr 2026, 13:16

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2026/04/msg00022.html -

14 Apr 2026, 19:23

Type	Values Removed	Values Added
References	~~() https://github.com/flatpak/xdg-dbus-proxy/security/advisories/GHSA-vjp5-hjfm-7677 -~~	() https://github.com/flatpak/xdg-dbus-proxy/security/advisories/GHSA-vjp5-hjfm-7677 - Vendor Advisory
References	~~() http://www.openwall.com/lists/oss-security/2026/04/10/15 -~~	() http://www.openwall.com/lists/oss-security/2026/04/10/15 - Third Party Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CWE		NVD-CWE-noinfo
CPE		cpe:2.3:a:flatpak:xdg-dbus-proxy::::::::
First Time		Flatpak Flatpak xdg-dbus-proxy

11 Apr 2026, 03:16

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/04/10/15 -

07 Apr 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-07 21:17

Updated : 2026-04-21 13:16

NVD link : CVE-2026-34080

Mitre link : CVE-2026-34080

CVE.ORG link : CVE-2026-34080

JSON object : View

Products Affected

flatpak

xdg-dbus-proxy

CWE

CWE-1289

Improper Validation of Unsafe Equivalence in Input

NVD-CWE-noinfo

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