CVE-2026-39959 | tmds Tmds.DBus/Tmds.DBus.Protocol up to 0.91.x SynchronizationContext allocation of resources (GHSA-xrw6-gwf8-vvr9)

VDB-356628 · CVE-2026-39959 · GHSA-XRW6-GWF8-VVR9 TMDS TMDS.DBUS/TMDS.DBUS.PROTOCOL UP TO 0.91.X SYNCHRONIZATIONCONTEXT ALLOCATION OF RESOURCES HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.6 $0-$5k 0.81+ Summaryinfo A vulnerability was found in tmds Tmds.DBus and Tmds.DBus.Protocol up to 0.91.x. It has been declared as problematic. This affects an unknown function of the component SynchronizationContext. The manipulation results in allocation of resources. This vulnerability was named CVE-2026-39959. The attack needs to be approached locally. There is no available exploit. It is recommended to upgrade the affected component. Detailsinfo A vulnerability, which was classified as problematic, was found in tmds Tmds.DBus and Tmds.DBus.Protocol up to 0.91.x. Affected is some unknown processing of the component SynchronizationContext. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. This is going to have an impact on integrity, and availability. CVE summarizes: Tmds.DBus provides .NET libraries for working with D-Bus from .NET. 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. This vulnerability is fixed in Tmds.DBus 0.92.0 and Tmds.DBus.Protocol 0.92.0 and 0.21.3. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-39959 since 04/08/2026. The exploitability is told to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. Upgrading to version 0.92.0 eliminates this vulnerability. Productinfo Vendor tmds Name Tmds.DBus Tmds.DBus.Protocol Version 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.10 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 0.19 0.20 0.21 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29 0.30 0.31 0.32 0.33 0.34 0.35 0.36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.45 0.46 0.47 0.48 0.49 0.50 0.51 0.52 0.53 0.54 0.55 0.56 0.57 0.58 0.59 0.60 0.61 0.62 0.63 0.64 0.65 0.66 0.67 0.68 0.69 0.70 0.71 0.72 0.73 0.74 0.75 0.76 0.77 0.78 0.79 0.80 0.81 0.82 0.83 0.84 0.85 0.86 0.87 0.88 0.89 0.90 0.91 Website Product: https://github.com/tmds/Tmds.DBus/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.7 VulDB Meta Temp Score: 5.6 VulDB Base Score: 4.4 VulDB Temp Score: 4.2 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.1 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Allocation of resources CWE: CWE-770 / CWE-400 / CWE-404 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Tmds.DBus/Tmds.DBus.Protocol 0.92.0 Timelineinfo 04/08/2026 CVE reserved 04/09/2026 +1 days Advisory disclosed 04/09/2026 +0 days VulDB entry created 04/09/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-xrw6-gwf8-vvr9 Status: Confirmed CVE: CVE-2026-39959 (🔒) GCVE (CVE): GCVE-0-2026-39959 GCVE (VulDB): GCVE-100-356628 Entryinfo Created: 04/09/2026 19:44 Changes: 04/09/2026 19:44 (64) Complete: 🔍 Cache ID: 99:414:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸