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.

• CWE-532

• 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

Published

Oct 20, 2026

Last Modified

Oct 28, 2026

Status

Awaiting Analysis

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-111756follow-redirects is a Node.js HTTP and HTTPS client wrapper …8.2
• CVE-2026-111757Hono is a Web application framework that provides support fo…5.3
• CVE-2026-111758markdown-it is a Markdown parser. From versions 14.1.0 to be…7.5
• CVE-2026-111759markdown-it is a Markdown parser. Prior to 14.3.2 and 15.0.2…7.5
• CVE-2026-11176Inappropriate implementation in Media in Google Chrome prior…6.5
• CVE-2026-111761A2A Java SDK is the official Java SDK for the Agent2Agent (A…5.8
• CVE-2026-111763A2A Java SDK is the official Java SDK for the Agent2Agent (A…5.7
• CVE-2026-111764A2A Java SDK is the official Java SDK for the Agent2Agent (A…7.5
• CVE-2026-111765A2A Java SDK is the official Java SDK for the Agent2Agent (A…7.5
• CVE-2026-111766markdown-it is a Markdown parser. Prior to 14.3.3 and 15.0.3…3.7
• CVE-2026-111767MCP TypeScript SDK is the official TypeScript SDK for Model …8.6
• CVE-2026-11177Use after free in Omnibox in Google Chrome prior to 149.0.78…8.8