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

{
  "id": "8d769bfa602f68bd5a8d7bbc31571d2a4679c7f63757741f1bc02f4fba086a5c",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-118128",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "a2aproject a2a-js Task Status Update result_manager.ts ResultManager.applyStatusUpdate race condition",
    "summary": "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.",
    "evidence": "cve:CVE-2026-118128",
    "products": [
      {
        "name": {
          "value": "a2a-js",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-118128",
      "aliases": [
        "CVE-2026-118128"
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "vectorString": "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"
          }
        },
        {
          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "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"
          }
        },
        {
          "cvssV3_0": {
            "version": "3.0",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "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"
          }
        },
        {
          "cvssV2_0": {
            "version": "2.0",
            "baseScore": 6.4,
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:P/E:ND/RL:OF/RC:C"
          }
        }
      ],
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:a2aproject:a2a-js:*:*:*:*:*:*:*:*"
          ],
          "vendor": "a2aproject",
          "modules": [
            "Task Status Update Handler"
          ],
          "product": "a2a-js",
          "versions": [
            {
              "status": "affected",
              "version": "1.0"
            },
            {
              "status": "affected",
              "version": "1.1.0"
            },
            {
              "status": "unaffected",
              "version": "1.2.0"
            }
          ]
        }
      ],
      "modified": "2026-10-28T16:12:56.611Z",
      "provider": "cve",
      "references": [
        "https://vuldb.com/vuln/427455",
        "https://vuldb.com/vuln/427455/cti",
        "https://vuldb.com/cve/CVE-2026-118128",
        "https://vuldb.com/submit/1015057",
        "https://github.com/a2aproject/a2a-js/pull/636",
        "https://github.com/a2aproject/a2a-js/commit/7b87c9480bfa643f9d2b2eaf06988b3d3a95de25",
        "https://github.com/a2aproject/a2a-js/releases/tag/v1.2.0",
        "https://github.com/a2aproject/a2a-js/"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-118128",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-28T15:54:30.660593Z"
                  }
                }
              }
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            "providerMetadata": {
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              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-28T16:12:56.611Z"
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        "cna": {
          "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
          "shortName": "VulDB",
          "dateUpdated": "2026-10-27T22:15:19.102Z"
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    },
    "related_cves": [
      {
        "value": "CVE-2026-118128",
        "evidence": "/cveMetadata/cveId"
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    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 460245,
  "published_at": "2026-10-27T22:15:19.102+00:00"
}