GitHub Advisoryadvisory · NuGet

GHSA-xrw6-gwf8-vvr9 Tmds.DBus: malicious D-Bus peers can spoof signals, exhaust file descriptor resources, and cause denial of service

HIGH Published 2026-04-08 Modified 2026-04-09 Official page ↗
Aliases
CVE-2026-39959
Ecosystem
NuGet
Packages
Tmds.DBus, Tmds.DBus.Protocol
Severity
High
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weaknesses
CWE-290, CWE-400
Reviewed
2026-04-08

Affected packages

• NuGet Tmds.DBus: < 0.92.0 → fixed in 0.92.0 • NuGet Tmds.DBus.Protocol: < 0.21.3 → fixed in 0.21.3 • NuGet Tmds.DBus.Protocol: >= 0.22.0, < 0.92.0 → fixed in 0.92.0

Description

Tmds.DBus and Tmds.DBus.Protocol are vulnerable to malicious D-Bus peers. A peer on the same bus can spoof signals by impersonating the owner of a well-known name, exhaust system resources or cause file descriptor spillover by sending messages with an excessive number of Unix file descriptors, and crash the application by sending malformed message bodies that cause unhandled exceptions on the SynchronizationContext. Patches The vulnerabilities are fixed in version 0.92.0. For Tmds.DBus.Protocol, the fixes are also backported to 0.21.3. Workarounds There are no known workarounds. Users should upgrade to a patched version.

Related

Alias · CVE (1)

  • CVE-2026-39959 Tmds.DBus provides .NET libraries for working with D-Bus from .NET. vulnerability

Weakness · CWE (2)

  • CWE-290 Authentication Bypass by Spoofing weakness
  • CWE-400 Uncontrolled Resource Consumption weakness

References