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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
References 9
https://github.com/a2aproject/a2a-java/
cna@vuldb.com
https://github.com/a2aproject/a2a-java/commit/247a655043f145f6f8e3853724b6a543e…
cna@vuldb.com
https://github.com/a2aproject/a2a-java/pull/1043
cna@vuldb.com
https://github.com/a2aproject/a2a-java/pull/1053
cna@vuldb.com
https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final
cna@vuldb.com
https://vuldb.com/cve/CVE-2026-90819
cna@vuldb.com
https://vuldb.com/submit/922996
cna@vuldb.com
https://vuldb.com/vuln/403322
cna@vuldb.com
https://vuldb.com/vuln/403322/cti
cna@vuldb.com