CVE-2026-117507
Published:October 27, 2026
Updated:October 28, 2026
A security vulnerability has been detected in a2aproject a2a-java up to 1.2.0.Final. This impacts the function TaskManager.saveTaskEvent. The manipulation leads to race condition. The attack may be initiated remotely. Upgrading to version 1.3.0.Final will fix this issue. The identifier of the patch is 6b8e1e085c35e970ef0048901cd25850e4791ec2. The affected component should be upgraded.
Affected Packages
https://github.com/a2aproject/a2a-java.git (GITHUB):
Affected version(s) >=v1.0.0.Alpha1 <v1.3.0.FinalFix Suggestion:
Update to version v1.3.0.Finalorg.a2aproject.sdk:a2a-java-sdk-server-common (JAVA):
Affected version(s) >=1.0.0.Alpha4 <1.3.0.FinalFix Suggestion:
Update to version 1.3.0.FinalRelated Resources (9)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
NOT DEFINED
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Exploit Maturity
NOT DEFINED
Weakness Type (CWE)
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')