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CVE

CVE-2026-39959

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

CVE-2026-39959

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

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.1
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
C
H
U
7.1
-
3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Related Resources

No items found.

References

https://github.com/tmds/Tmds.DBus/security/advisories/GHSA-xrw6-gwf8-vvr9, https://nvd.nist.gov/vuln/detail/CVE-2026-39959, https://github.com/tmds/Tmds.DBus, https://github.com/tmds/Tmds.DBus/releases/tag/rel%2F0.21.3, https://github.com/tmds/Tmds.DBus/releases/tag/rel%2F0.92.0

Severity

7.1

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.1
EPSS Probability
0.00005%
EPSS Percentile
0.00284%
Introduced Version
0,0.1.0,0.4.0,0.5.0,0.6.0,0.22.0,0.90.0,0.12.0,0.16.0,0.18.0,0.19.0
Fix Available
0.92.0,0.21.3

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