Vulnerability DatabaseCVE-2026-116479
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CVE-2026-116479
Published:October 26, 2026
Updated:October 28, 2026
A flaw has been found in a2aproject a2a-java up to 1.2.0.Final. This impacts the function getMessage of the component JSON-RPC Error Handler. This manipulation causes information exposure through error message. The attack can be initiated remotely. Upgrading to version 1.3.0.Final will fix this issue. Patch name: bbee3369f3825d0fba2373d821f6dc6d4fc82ec0. Upgrading the affected component is advised.
Affected Packages
https://github.com/a2aproject/a2a-java.git (GITHUB):
Affected version(s) >=v1.0.0.Alpha1 <v1.3.0.Final
Fix Suggestion:
Update to version v1.3.0.Final
org.a2aproject.sdk:a2a-java-sdk-reference-rest (JAVA):
Affected version(s) >=1.0.0.Alpha4 <1.3.0.Final
Fix Suggestion:
Update to version 1.3.0.Final
org.a2aproject.sdk:a2a-java-sdk-transport-rest (JAVA):
Affected version(s) >=1.0.0.Alpha4 <1.3.0.Final
Fix Suggestion:
Update to version 1.3.0.Final
org.a2aproject.sdk:a2a-java-sdk-transport-grpc (JAVA):
Affected version(s) >=1.0.0.Alpha4 <1.3.0.Final
Fix Suggestion:
Update to version 1.3.0.Final
org.a2aproject.sdk:a2a-java-sdk-reference-jsonrpc (JAVA):
Affected version(s) >=1.0.0.Alpha4 <1.3.0.Final
Fix Suggestion:
Update to version 1.3.0.Final
org.a2aproject.sdk:a2a-java-sdk-transport-jsonrpc (JAVA):
Affected version(s) >=1.0.0.Alpha4 <1.3.0.Final
Fix Suggestion:
Update to version 1.3.0.Final
Related Resources (9)
https://nvd.nist.gov/vuln/detail/CVE-2026-116479
https://vuldb.com/cve/CVE-2026-116479
https://github.com/a2aproject/a2a-java/commit/bbee3369f3825d0fba2373d821f6dc6d4fc82ec0
https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final
https://vuldb.com/submit/1014889
https://github.com/a2aproject/a2a-java/
https://vuldb.com/vuln/426392/cti
https://github.com/a2aproject/a2a-java/pull/1046
https://vuldb.com/vuln/426392
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
NOT DEFINED
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Exploit Maturity
NOT DEFINED
Weakness Type (CWE)
Generation of Error Message Containing Sensitive Information
CWE-209
Exposure of Sensitive Information to an Unauthorized Actor
CWE-200
EPSS
Base Score:
0.32