CVE-2026-116477a2aproject a2a-dotnet Parser A2AJsonRpcProcessor.cs A2AJsonRpcProcessor.ProcessRequestAsync information exposure

Beschreibung

A security vulnerability has been detected in a2aproject a2a-dotnet up to 1.0.0-preview2. The impacted element is the function A2AJsonRpcProcessor.ProcessRequestAsync of the file src/A2A.AspNetCore/A2AJsonRpcProcessor.cs of the component Parser. The manipulation leads to information exposure through error message. It is possible to initiate the attack remotely. Upgrading to version 1.0.0-preview3 is sufficient to resolve this issue. The identifier of the patch is ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4. Upgrading the affected component is recommended.

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Referenzen und Patches

• VDB-426390 | a2aproject a2a-dotnet Parser A2AJsonRpcProcessor.cs A2AJsonRpcProcessor.ProcessRequestAsync information exposure vdb-entrytechnical-description
• VDB-426390 | CTI Indicators (IOB, IOC, TTP, IOA) signaturepermissions-required
• CVE-2026-116477 | CVE Analysis and Report third-party-advisory
• Submit #1014890 | a2aproject a2a-dotnet ≤ v1.0.0-preview2 CWE-209 third-party-advisory
• https://github.com/a2aproject/a2a-dotnet/pull/452 issue-trackingpatch
• https://github.com/a2aproject/a2a-dotnet/commit/ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4 patch
• https://github.com/a2aproject/a2a-dotnet/releases/tag/v1.0.0-preview3 patch
• https://github.com/a2aproject/a2a-dotnet/ product