CVE-2026-93676

xdg-dbus-proxy: xdg-dbus-proxy: filtering for broadcast messages bypasses path/interface/member checks

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Severity

Low

Red Hat Product Security

3.2

CVSS 3.1

Review impact separately from score.

Published · August 11, 2026

Updated · September 28, 2026

Description

xdg-dbus-proxy incorrectly filters D-Bus broadcast messages, bypassing configured path, interface, and member restrictions. This allows a sandboxed Flatpak application to intercept broadcast signals on the D-Bus session bus and AT-SPI bus that should be restricted, potentially exposing sensitive information to unauthorized applications.

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

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 3.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N

CWE-284 · Improper Access Control