Low [CVE-2026-93676] Xdg-dbus-proxy: xdg-dbus-proxy: filtering for broadcast messages bypasses path/interface/member checks
This low-severity Red Hat Linux advisory covers CVE-2026-93676.
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Summary
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.
Red Hat severity: Low — CVSS 3.2 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N). Weakness: CWE-284.
Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
Mitigation checklist
- Vulnerable code is commit 0297845, included in versions 0.1.6, 0.1.7. Fixed in 0.1.8. Workarounds are to avoid installing untrusted apps, or avoid using the --broadcast or --call options of xdg-dbus-proxy.
Official advisory · high-confidence parse· fetched 11 days ago·verify at source
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