Vulnerability in Flatpak Xdg-Dbus-Proxy
CVE-2026-34080
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (4.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 5th percentile — 4.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: -0.000
Affected products
- Flatpak Xdg-Dbus-Proxy — versions < 0.1.7
Weakness classification (CWE)
References
- github.com/flatpak/xdg-dbus-proxy/security/advisories/GHSA-vjp5-hjfm-7677 (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-34080?
- CVE-2026-34080 is a medium-severity vulnerability in Flatpak Xdg-Dbus-Proxy, classified under CWE-1289. CVSS score: 5.5/10. Published 2026-04-07.
- How severe is CVE-2026-34080?
- Medium severity. CVSS v3 base score is 5.5 out of 10.