CVE-2026-118128
a2aproject a2a-js Task Status Update result_manager.ts ResultManager.applyStatusUpdate race condition
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
A vulnerability has been found in a2aproject a2a-js up to 1.1.0. Impacted is the function ResultManager.applyStatusUpdate of the file src/server/result_manager.ts of the component Task Status Update Handler. Such manipulation leads to race condition. The attack may be launched remotely. Upgrading to version 1.2.0 is recommended to address this issue. The name of the patch is 7b87c9480bfa643f9d2b2eaf06988b3d3a95de25. It is recommended to upgrade the affected component.
| CWE | CWE-362 |
| Vendor | a2aproject |
| Product | a2a-js |
| Published | Oct 27, 2026 |
Stay Ahead of the Next One
Get instant alerts for a2aproject a2a-js
Be the first to know when new medium vulnerabilities affecting a2aproject a2a-js are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
a2aproject / a2a-js
1.0 1.1.0
References
vuldb.com: https://vuldb.com/vuln/427455 vuldb.com: https://vuldb.com/vuln/427455/cti vuldb.com: https://vuldb.com/cve/CVE-2026-118128 vuldb.com: https://vuldb.com/submit/1015057 github.com: https://github.com/a2aproject/a2a-js/pull/636 github.com: https://github.com/a2aproject/a2a-js/commit/7b87c9480bfa643f9d2b2eaf06988b3d3a95de25 github.com: https://github.com/a2aproject/a2a-js/releases/tag/v1.2.0 github.com: https://github.com/a2aproject/a2a-js/
Credits
🔍 colorfullbz (VulDB User)