Vulnerability · Published Sep 18, 2026 · Assigned by redhat

CVE-2026-93676Xdg-dbus-proxy: xdg-dbus-proxy: filtering for broadcast messages bypasses path/interface/member checks

Low 3.2

In plain English

A low-severity improper access control in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.2Low

Exploit odds (30 days)0.1%top 96.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:13	xdg-dbus-proxy	0.1.6-1+deb13u2	DEBIAN-CVE-2026-93676
Debian:14	xdg-dbus-proxy	0.1.8-1	DEBIAN-CVE-2026-93676
Ubuntu:22.04:LTS	xdg-dbus-proxy	no fix listed	UBUNTU-CVE-2026-93676
Ubuntu:24.04:LTS	xdg-dbus-proxy	no fix listed	UBUNTU-CVE-2026-93676
Ubuntu:26.04:LTS	xdg-dbus-proxy	no fix listed	UBUNTU-CVE-2026-93676

Affected products (as reported)

Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 10	see references
Red Hat	Red Hat Enterprise Linux 9	see references

Weakness: CWE-284 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N

References

https://access.redhat.com/security/cve/CVE-2026-93676 vdb-entry, x_refsource_REDHAT
RHBZ#2537014 issue-tracking, x_refsource_REDHAT
http://www.openwall.com/lists/oss-security/2026/09/22/24