CVE-2026-34080
xdg-dbus-proxy: xdg-dbus-proxy: Information disclosure due to policy parser vulnerability
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 8, 2026
Updated · June 28, 2026
Description
A flaw was found in xdg-dbus-proxy, a filtering proxy for D-Bus connections. A local client can exploit a policy parser vulnerability by crafting specific policy rules, such as including a space before the equals sign in "eavesdrop=true". This improper parsing allows the client to bypass intended eavesdrop restrictions. The consequence is information disclosure, where clients can intercept D-Bus messages that should otherwise be inaccessible.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE-1286 · Improper Validation of Syntactic Correctness of Input