CVE-2026-90819

A weakness has been identified in a2aproject a2a-java 1.2.0. The affected element is the function BasePushNotificationSender.dispatchNotification of the file server-common/src/main/java/org/a2aproject/sdk/server/tasks/BasePushNotificationSender.java of the component Authorization Header Construction. This manipulation causes http response splitting. The attack can be initiated remotely. Upgrading to version 1.3.0 is sufficient to fix this issue. Patch name: 247a655043f145f6f8e3853724b6a543eaa02001. You should upgrade the affected component.

• CWE-93
• CWE-113

• https://github.com/a2aproject/a2a-java/
• https://github.com/a2aproject/a2a-java/commit/247a655043f145f6f8e3853724b6a543eaa02001
• https://github.com/a2aproject/a2a-java/pull/1043
• https://github.com/a2aproject/a2a-java/pull/1053
• https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final
• https://vuldb.com/cve/CVE-2026-90819
• https://vuldb.com/submit/922996
• https://vuldb.com/vuln/403322
• https://vuldb.com/vuln/403322/cti

Published

Sep 14, 2026

Last Modified

Sep 15, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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