CVE-2026-94422 xdg-dbus-proxy - Remote Code Execution

xdg-dbus-proxy < 0.1.9 contains a bypass of message filtering caused by improper handling of reply serial numbers on non-reply messages, letting malicious Flatpak apps execute arbitrary code outside their sandbox, exploit requires malicious or compromised Flatpak app.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.69% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2 October 2026
Updated
15 October 2026
Weakness
CWE-290

Vendor fix

Update to version 0.1.9 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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