VulnerabilityModified

CVE-2026-34080

Prior to 0.1.7, a policy parser vulnerability allows bypassing eavesdrop restrictions.

MEDIUM 6.8EPSS 0.18%

Does this matter?

Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own.

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 4.0: 6.8 MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.18% probability · 7th percentile
CISA KEV: Not listed
Weakness: CWE-1289
Affected: flatpak/xdg-dbus-proxy
Source: security-advisories@github.com

References

https://github.com/flatpak/xdg-dbus-proxy/security/advisories/GHSA-vjp5-hjfm-7677Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/10/15Third Party Advisory
https://lists.debian.org/debian-lts-announce/2026/04/msg00022.html

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.