CVE-2026-90819a2aproject a2a-java Authorization Header Construction BasePushNotificationSender.java BasePushNotificationSender.dispatchNotification response splitting

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• VDB-403322 | a2aproject a2a-java Authorization Header Construction BasePushNotificationSender.java BasePushNotificationSender.dispatchNotification response splitting vdb-entrytechnical-description
• VDB-403322 | CTI Indicators (IOB, IOC, IOA) signaturepermissions-required
• CVE-2026-90819 | CVE Analysis and Report third-party-advisory
• Submit #922996 | a2aproject a2a-java v1.2.0 CRLF third-party-advisory
• https://github.com/a2aproject/a2a-java/pull/1043 issue-trackingpatch
• https://github.com/a2aproject/a2a-java/pull/1053 issue-trackingpatch
• https://github.com/a2aproject/a2a-java/commit/247a655043f145f6f8e3853724b6a543eaa02001 patch
• https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final patch
• https://github.com/a2aproject/a2a-java/ product