Medium · CVSS 6.9CVE-2026-118128

a2aproject a2a-js Task Status Update result_manager.ts ResultManager.applyStatusUpdate race conditionCVE-2026-118128

Answer in brief

CVE-2026-118128 records a Medium severity (CVSS 6.9) vulnerability in a2aproject a2a-js Task Status Update result_manager.ts ResultManager.applyStatusUpdate race condition. The current sources do not mark it as known exploited. The current feed maps a2aproject/a2a-js (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 27, 2026Updated Oct 27, 2026Source checked Oct 28, 2026First seen by HOL Oct 28, 2026Material review Oct 27, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.9
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 6.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps a2aproject/a2a-js (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
a2aproject/a2a-jsgeneric	1.0 \|\| 1.1.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for a2aproject/a2a-js.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Oct 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 28, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.