Information Exposure Flaw in a2a-java Affects Remote Attack Surface
CVE-2026-116479

5.3MEDIUM

Key Information:

Vendor

A2aproject

Status
A2a-java
Vendor
CVE Published:
26 October 2026

What is CVE-2026-116479?

A flaw in the a2a-java component, specifically in the JSON-RPC Error Handler's getMessage function, allows remote attackers to exploit error messages for information disclosure. Upgrading to a2a-java version 1.3.0.Final is recommended to remedy this vulnerability. The patch addresses the exposure by securing error message handling.

Affected Version(s)

a2a-java 1.2.0.Final

a2a-java 1.3.0.Final

References

https://vuldb.com/vuln/426392
vdb-entrytechnical-description
https://vuldb.com/vuln/426392/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-116479
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

colorfullbz (VulDB User)
.