CVE-2026-116477: medium-severity vulnerability in a2aproject a2a-dotnet
a2aproject a2a-dotnet Parser A2AJsonRpcProcessor.cs A2AJsonRpcProcessor.ProcessRequestAsync information exposure
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.3%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X
Affected products
a2aproject · a2a-dotnetRelated CVEs — a2aproject a2a-dotnet
In the same product, most dangerous first.
References
https://github.com/a2aproject/a2a-dotnet/https://github.com/a2aproject/a2a-dotnet/commit/ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4https://github.com/a2aproject/a2a-dotnet/pull/452https://github.com/a2aproject/a2a-dotnet/releases/tag/v1.0.0-preview3https://vuldb.com/cve/CVE-2026-116477https://vuldb.com/submit/1014890https://vuldb.com/vuln/426390https://vuldb.com/vuln/426390/cti