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Advisory record · GHSA-xrw6-gwf8-vvr9

Tmds.DBus: malicious D-Bus peers can spoof signals, exhaust file descriptor resources, and cause denial of service

CVSS 7.1 HighEPSS 0.0013 · 2nd percentile

Published by the GitHub Advisory Database at 8 Apr 2026, 19:52 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
Tmds.DBusNuGet<0.92.00.92.0
Tmds.DBus.ProtocolNuGet<0.21.3 || >=0.22.0, <0.92.00.21.3, 0.92.0
Identifiers
GHSA-xrw6-gwf8-vvr9 · CVE-2026-39959
Weakness (CWE)
CWE-290 · CWE-400 · CWE-770
Tags
Published
8 Apr 2026
Updated
9 Apr 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Tmds.DBus versions before 0.92.0 and Tmds.DBus.Protocol versions before 0.21.3, or from 0.22.0 up to 0.92.0, are vulnerable. A peer on the same D-Bus bus can spoof signals by impersonating the owner of a well-known name, exhaust resources through excessive Unix file descriptors, or crash the application with malformed message bodies. Upgrade Tmds.DBus to 0.92.0, and Tmds.DBus.Protocol to 0.21.3 or 0.92.0. No workarounds are known.

Written 9 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.1 High 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0013, the 2nd percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 15:22 UTC First seen by agentprime
  2. 31 Oct 2026, 15:22 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.