CVE-2026-111762

A2A Java SDK is the official Java SDK for the Agent2Agent (A2A) Protocol. Prior to 1.3.0.Final, RestHandler.parseRequestBody in `transport/rest/src/main/java/org/a2aproject/sdk/transport/rest/handler/RestHandler.java` logs the entire JSON request body at SEVERE level when JsonFormat.parser().merge() throws InvalidProtocolBufferException. With push notifications enabled, createTaskPushNotificationConfiguration reaches this parser for requests to `/v1/tenants/{tenant}/tasks/{taskId}/pushNotificationConfigs`, whose token and authentication.credentials fields can contain bearer tokens and authentication credentials for client push endpoints. A valid JSON body that fails protobuf deserialization, including an unknown field under strict parsing or a schema mismatch, causes those secrets to be written to the server logs in cleartext. An attacker with access to the server logs or a log aggregation system can retrieve the credentials and potentially use the credentials to send forged task status updates to the client's push notification endpoint. This issue is fixed in version 1.3.0.Final.

CVSS

No CVSS.

References

Link	Resource
https://github.com/a2aproject/a2a-java/commit/88827105fee0daaac0d883a4a68eb644571d7230
https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final
https://github.com/a2aproject/a2a-java/security/advisories/GHSA-x32g-jvvm-4725

Configurations

No configuration.

History

20 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-20 15:17

Updated : 2026-10-28 15:17

NVD link : CVE-2026-111762

Mitre link : CVE-2026-111762

CVE.ORG link : CVE-2026-111762

JSON object : View

Products Affected

No product.

CWE

CWE-532

Insertion of Sensitive Information into Log File

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