CVE-2026-118128

a2aproject a2a-js Task Status Update result_manager.ts ResultManager.applyStatusUpdate race condition

State: Published
Severity: 6.9 Medium
Published: Oct 27, 2026
Updated: Oct 28, 2026
Reserved: Oct 27, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	6.5 Medium	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	VulDB
3.0	6.5 Medium	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C	VulDB
2.0	6.4 Medium	AV:N/AC:L/Au:N/C:N/I:P/A:P/E:ND/RL:OF/RC:C	VulDB

Weaknesses

CWE-362 Race Condition

Affected Products

Product	Versions
a2a-jsa2aproject	1.0Affected 1.1.0Affected 1.2.0Not affected

References

VDB-427455 | a2aproject a2a-js Task Status Update result_manager.ts ResultManager.applyStatusUpdate race conditionvdb-entrytechnical-description
VDB-427455 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-118128 | CVE Analysis and Reportthird-party-advisory
Submit #1015057 | a2aproject a2a-js ≤ 1.1.0 CWE-362third-party-advisory
https://github.com/a2aproject/a2a-js/pull/636issue-trackingpatch
https://github.com/a2aproject/a2a-js/commit/7b87c9480bfa643f9d2b2eaf06988b3d3a95de25patch
https://github.com/a2aproject/a2a-js/releases/tag/v1.2.0patch
https://github.com/a2aproject/a2a-js/product

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