Information Exposure Vulnerability in a2aproject a2a-go Push Notification Handler
CVE-2026-116478

6.9MEDIUM

Key Information:

Vendor

A2aproject

Status
A2a-go
Vendor
CVE Published:
26 October 2026

What is CVE-2026-116478?

A significant vulnerability exists in the a2a-go Push Notification Handler, specifically within the CreateExecutor function of the agentexec.go file. This flaw can lead to unauthorized information exposure through detailed error messages, allowing an attacker to potentially extract sensitive insights remotely. Users are urged to resolve this issue by upgrading to version 2.5.0, where this vulnerability is addressed. The patch associated with this update can be tracked in the commit f4d588216b0c9520e94d571bab725c38ce23064c.

Affected Version(s)

a2a-go 2.0

a2a-go 2.1

a2a-go 2.2

References

https://vuldb.com/vuln/426391
vdb-entrytechnical-description
https://vuldb.com/vuln/426391/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-116478
third-party-advisory

CVSS V4

Score:
6.9
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)
.