{"id":"CVE-2026-116477","published":"2026-10-26T20:17:54.890","lastModified":"2026-10-26T20:17:54.890","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.","cvssScore":4.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","cwes":["CWE-200","CWE-209"],"vendors":[],"products":[],"references":[{"url":"https://github.com/a2aproject/a2a-dotnet/","tags":[]},{"url":"https://github.com/a2aproject/a2a-dotnet/commit/ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4","tags":[]},{"url":"https://github.com/a2aproject/a2a-dotnet/pull/452","tags":[]},{"url":"https://github.com/a2aproject/a2a-dotnet/releases/tag/v1.0.0-preview3","tags":[]},{"url":"https://vuldb.com/cve/CVE-2026-116477","tags":[]},{"url":"https://vuldb.com/submit/1014890","tags":[]},{"url":"https://vuldb.com/vuln/426390","tags":[]},{"url":"https://vuldb.com/vuln/426390/cti","tags":[]}],"exploitRefs":[{"url":"https://github.com/a2aproject/a2a-dotnet/","tags":[]},{"url":"https://github.com/a2aproject/a2a-dotnet/commit/ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4","tags":[]},{"url":"https://github.com/a2aproject/a2a-dotnet/pull/452","tags":[]},{"url":"https://github.com/a2aproject/a2a-dotnet/releases/tag/v1.0.0-preview3","tags":[]}],"hasPoc":true,"ai":null}