Medium severity · published Apr 7, 2026
CVE-2026-34080
xdg-dbus-proxy has an eavesdrop filter bypass allowing message interception
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
xdg-dbus-proxy is a filtering proxy for D-Bus connections. Prior to 0.1.7, a policy parser vulnerability allows bypassing eavesdrop restrictions. The proxy checks for eavesdrop=true in policy rules but fails to handle eavesdrop ='true' (with a space before the equals sign) and similar cases. Clients can intercept D-Bus messages they should not have access to. This vulnerability is fixed in 0.1.7.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XD
xdg-dbus-proxy · flatpak
< 0.1.7 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34080
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-34080
Vendor Advisory
https://github.com/flatpak/xdg-dbus-proxy/security/advisories/GHSA-vjp5-hjfm-7677
Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/04/10/15
lists.debian.org
https://lists.debian.org/debian-lts-announce/2026/04/msg00022.html