Vulnerabilities in pkg:nuget/Tmds.DBus
PACKAGECVE-2026-39959 is a HIGH (CVSS 7.1) remote code execution vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Tmds.DBus libraries in the NuGet ecosystem. The issue involves malicious d-bus peers can spoof signals, exhaust file descriptor resources, and cause denial of service. Remediation is available by upgrading affected packages to version 0.92.0, 0.21.3.
pkg:nuget/Tmds.DBus
Vulnerability advisories affecting package pkg:nuget/Tmds.DBus. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-xrw6-gwf8-vvr9 | CVE-2026-39959 | HIGH | Tmds.DBus: malicious D-Bus peers can spoof signals, exhaust file descriptor resources, and cause denial of service |
CVE-2026-39959 at a Glance
Security Impact
CVSS: 7.1
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H).
How to Fix CVE-2026-39959
To remediate this vulnerability, upgrade all affected Tmds.DBus dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade Tmds.DBus to 0.92.0Upgrade Tmds.DBus.Protocol to 0.21.3Upgrade Tmds.DBus.Protocol to 0.92.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for Tmds.DBusHow to Check if You Are Affected
To determine whether your application is affected by CVE-2026-39959, inspect your project dependencies for Tmds.DBus:
inspect dependencies for Tmds.DBusAnalyze the terminal output to locate any version of Tmds.DBus in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.92.0), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Tmds.DBus, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-39959 Affected Tmds.DBus Versions
3 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
Tmds.DBus
|
NuGet |
< 0.92.0
|
0.92.0
|
|
Tmds.DBus.Protocol
|
NuGet |
< 0.21.3
|
0.21.3
|
|
Tmds.DBus.Protocol
|
NuGet |
≥ 0.22.0
< 0.92.0
|
0.92.0
|
References
Frequently Asked Questions
What is CVE-2026-39959?
Which Tmds.DBus versions are affected?
What version fixes CVE-2026-39959?
Is Tmds.DBus affected?
Is Tmds.DBus.Protocol affected?
What is the CVSS score of CVE-2026-39959?
What CWE is associated with CVE-2026-39959?
How can I check NuGet dependencies for CVE-2026-39959?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-xrw6-gwf8-vvr9",
"modified" : "2026-04-09T19:05:46Z",
"published" : "2026-04-08T19:52:58Z",
"aliases" : [ "CVE-2026-39959" ],
"summary" : "Tmds.DBus: malicious D-Bus peers can spoof signals, exhaust file descriptor resources, and cause denial of service",
"details" : "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.\n\n### Patches\n\nThe vulnerabilities are fixed in version 0.92.0.\nFor Tmds.DBus.Protocol, the fixes are also backported to 0.21.3.\n\n### Workarounds\n\nThere are no known workarounds. Users should upgrade to a patched version.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "NuGet",
"name" : "Tmds.DBus"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.92.0"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Tmds.DBus.Protocol"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.21.3"
} ]
} ]
}, {
"package" : {
"ecosystem" : "NuGet",
"name" : "Tmds.DBus.Protocol"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0.22.0"
}, {
"fixed" : "0.92.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/tmds/Tmds.DBus/security/advisories/GHSA-xrw6-gwf8-vvr9"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-39959"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/tmds/Tmds.DBus"
}, {
"type" : "WEB",
"url" : "https://github.com/tmds/Tmds.DBus/releases/tag/rel%2F0.21.3"
}, {
"type" : "WEB",
"url" : "https://github.com/tmds/Tmds.DBus/releases/tag/rel%2F0.92.0"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-290", "CWE-400" ],
"severity" : "HIGH",
"github_reviewed" : true,
"github_reviewed_at" : "2026-04-08T19:52:58Z",
"nvd_published_at" : "2026-04-09T17:16:30Z"
}
}