CVE-2026-93676

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

Published Sep 18, 2026 CVSS 3.1 · 3.2 Low EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

Affects versions 0.1.6 and 0.1.7. Fixed in 0.1.8.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Xdg-dbus-proxy: xdg-dbus-proxy: filtering for broadcast messages bypasses path/interface/member checks
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-284
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 3.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Sep 22, 2026, 11:07 PM
Reserved
Sep 18, 2026, 1:51 PM
Status
Awaiting Analysis
Published
Sep 18, 2026, 3:17 PM
Modified
Sep 22, 2026, 11:17 PM