Race Condition Vulnerability in a2a-js by a2aproject
CVE-2026-118128

6.9MEDIUM

Key Information:

Vendor

A2aproject

Status
A2a-js
Vendor
CVE Published:
27 October 2026

What is CVE-2026-118128?

A vulnerability exists in a2a-js versions up to 1.1.0, specifically in the ResultManager.applyStatusUpdate function within the Task Status Update Handler. This vulnerability allows attackers to exploit a race condition, potentially leading to unintended behavior or system instability. The issue can be exploited remotely, making it crucial for users to upgrade to version 1.2.0, which includes a patch (commit ID: 7b87c9480bfa643f9d2b2eaf06988b3d3a95de25) that resolves this security concern.

Affected Version(s)

a2a-js 1.0

a2a-js 1.1.0

a2a-js 1.2.0

References

https://vuldb.com/vuln/427455
vdb-entrytechnical-description
https://vuldb.com/vuln/427455/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-118128
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

colorfullbz (VulDB User)
.