CVE-2026-34080: CWE-1289: Improper Validation of Unsafe Equivalence in Input in flatpak xdg-dbus-proxy
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.
AI Analysis
Technical Summary
The vulnerability in xdg-dbus-proxy versions before 0.1.7 involves improper validation of unsafe equivalence in input, specifically in the parsing of policy rules for the 'eavesdrop' attribute. The proxy checks for 'eavesdrop=true' but does not correctly handle variants with spaces before the equals sign, allowing bypass of eavesdrop restrictions. This enables unauthorized interception of D-Bus messages. The issue is classified under CWE-1289 and has a CVSS 4.0 score of 6.8, indicating medium severity. The vulnerability is resolved in version 0.1.7.
Potential Impact
Clients using vulnerable versions of xdg-dbus-proxy can intercept D-Bus messages that should be restricted by eavesdrop policy rules. This compromises message confidentiality but does not affect message integrity or availability. There are no known exploits in the wild as of the published date.
Mitigation Recommendations
Upgrade xdg-dbus-proxy to version 0.1.7 or later where this vulnerability is fixed. Since no official patch links or vendor advisories are provided, verify the upgrade from the official flatpak sources. Patch status is not explicitly confirmed in the advisory, but the description states the issue is fixed in 0.1.7, indicating an official fix is available.
CVE-2026-34080: CWE-1289: Improper Validation of Unsafe Equivalence in Input in flatpak xdg-dbus-proxy
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in xdg-dbus-proxy versions before 0.1.7 involves improper validation of unsafe equivalence in input, specifically in the parsing of policy rules for the 'eavesdrop' attribute. The proxy checks for 'eavesdrop=true' but does not correctly handle variants with spaces before the equals sign, allowing bypass of eavesdrop restrictions. This enables unauthorized interception of D-Bus messages. The issue is classified under CWE-1289 and has a CVSS 4.0 score of 6.8, indicating medium severity. The vulnerability is resolved in version 0.1.7.
Potential Impact
Clients using vulnerable versions of xdg-dbus-proxy can intercept D-Bus messages that should be restricted by eavesdrop policy rules. This compromises message confidentiality but does not affect message integrity or availability. There are no known exploits in the wild as of the published date.
Mitigation Recommendations
Upgrade xdg-dbus-proxy to version 0.1.7 or later where this vulnerability is fixed. Since no official patch links or vendor advisories are provided, verify the upgrade from the official flatpak sources. Patch status is not explicitly confirmed in the advisory, but the description states the issue is fixed in 0.1.7, indicating an official fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-25T16:21:40.868Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5743aaaed68159a661743
Added to database: 4/7/2026, 9:16:42 PM
Last enriched: 4/7/2026, 9:31:37 PM
Last updated: 4/8/2026, 2:12:33 AM
Views: 8
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