CVE-2026-116477

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 v3 4.3 MEDIUM
CVSS v2.0 4.0 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:N/A:N

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://github.com/a2aproject/a2a-dotnet/
https://github.com/a2aproject/a2a-dotnet/commit/ccbd12b6108a6a8f0fd5d8b4a9ece3c8a94ba1e4
https://github.com/a2aproject/a2a-dotnet/pull/452
https://github.com/a2aproject/a2a-dotnet/releases/tag/v1.0.0-preview3
https://vuldb.com/cve/CVE-2026-116477
https://vuldb.com/submit/1014890
https://vuldb.com/vuln/426390
https://vuldb.com/vuln/426390/cti

Configurations

No configuration.

History

26 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-26 20:17

Updated : 2026-10-31 02:17

NVD link : CVE-2026-116477

Mitre link : CVE-2026-116477

CVE.ORG link : CVE-2026-116477

JSON object : View

Products Affected

No product.

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

CWE-209

Generation of Error Message Containing Sensitive Information

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