CVE-2026-116477

Medium

Description

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.

SeverityMedium
CVSS4.3
Exploit probability—
ProductA2aproject A2a-dotnet
PublishedOct 26, 2026
First seenOct 26, 2026

How to fix

Affected products

ProductAffected versionsFixed in
a2aproject a2a-dotnet1.0.0-preview2—

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