CVE-2026-34080 MEDIUM

CVE-2026-34080: xdg-dbus-proxy has an eavesdrop filter bypass allowing message interception

Vendor Flatpak
Product xdg-dbus-proxy
Weakness CWE-1289
Published April 7, 2026
Last update April 21, 2026
View on NVD All CVEs

CVSS base score

6.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 7, 2026 CVE published
April 21, 2026 Record updated