CVE-2026-93676

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.

Affected Software

Weaknesses

• CWE-284: Improper Access Control

Workarounds

Affects versions 0.1.6 and 0.1.7. Fixed in 0.1.8.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://access.redhat.com/security/cve/CVE-2026-93676
• https://bugzilla.redhat.com/show_bug.cgi?id=2537014

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