a2aproject a2a-go Distributed Manager distributed_manager.go Cancel denial of service

{
  "id": "de91cef78bbd04c932779eb65c03be75657c28e983e7c7e8e024ae010c9fa331",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-117504",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "a2aproject a2a-go Distributed Manager distributed_manager.go Cancel denial of service",
    "summary": "A vulnerability was identified in a2aproject a2a-go up to 2.4.0. The affected element is the function Cancel of the file internal/taskexec/distributed_manager.go of the component Distributed Manager. Such manipulation leads to denial of service. It is possible to launch the attack remotely. Upgrading to version 2.5.0 is sufficient to fix this issue. The name of the patch is 14e41a978b31e134ffa1170d8657f9dd98529aa3. Upgrading the affected component is advised.",
    "evidence": "cve:CVE-2026-117504",
    "products": [
      {
        "name": {
          "value": "a2a-go",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-117504",
      "aliases": [
        "CVE-2026-117504"
      ],
      "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:N/VA:L/SC:N/SI:N/SA:N/E:X"
          }
        },
        {
          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C"
          }
        },
        {
          "cvssV3_0": {
            "version": "3.0",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C"
          }
        },
        {
          "cvssV2_0": {
            "version": "2.0",
            "baseScore": 5,
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:OF/RC:C"
          }
        }
      ],
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:a2aproject:a2a-go:*:*:*:*:*:*:*:*"
          ],
          "vendor": "a2aproject",
          "modules": [
            "Distributed Manager"
          ],
          "product": "a2a-go",
          "versions": [
            {
              "status": "affected",
              "version": "2.0"
            },
            {
              "status": "affected",
              "version": "2.1"
            },
            {
              "status": "affected",
              "version": "2.2"
            },
            {
              "status": "affected",
              "version": "2.3"
            },
            {
              "status": "affected",
              "version": "2.4.0"
            },
            {
              "status": "unaffected",
              "version": "2.5.0"
            }
          ]
        }
      ],
      "modified": "2026-10-27T14:00:17.060Z",
      "provider": "cve",
      "references": [
        "https://vuldb.com/vuln/427071",
        "https://vuldb.com/vuln/427071/cti",
        "https://vuldb.com/cve/CVE-2026-117504",
        "https://vuldb.com/submit/1015053",
        "https://github.com/a2aproject/a2a-go/pull/409",
        "https://github.com/a2aproject/a2a-go/commit/14e41a978b31e134ffa1170d8657f9dd98529aa3",
        "https://github.com/a2aproject/a2a-go/releases/tag/v2.5.0",
        "https://github.com/a2aproject/a2a-go/"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
          "shortName": "VulDB",
          "dateUpdated": "2026-10-27T14:00:17.060Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-117504",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 392703,
  "published_at": "2026-10-27T14:00:17.06+00:00"
}