a2aproject a2a-java JSON-RPC Error getMessage information exposure

{
  "id": "3d69ac8a695807cfdf28ac53f3e1442ecfd6ca9ad907fdab06aa0a13c2e576da",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116479",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "a2aproject a2a-java JSON-RPC Error getMessage information exposure",
    "summary": "A flaw has been found in a2aproject a2a-java up to 1.2.0.Final. This impacts the function getMessage of the component JSON-RPC Error Handler. This manipulation causes information exposure through error message. The attack can be initiated remotely. Upgrading to version 1.3.0.Final will fix this issue. Patch name: bbee3369f3825d0fba2373d821f6dc6d4fc82ec0. Upgrading the affected component is advised.",
    "evidence": "cve:CVE-2026-116479",
    "products": [
      {
        "name": {
          "value": "a2a-java",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-116479",
      "aliases": [
        "CVE-2026-116479"
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "version": "4.0",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X"
          }
        },
        {
          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C"
          }
        },
        {
          "cvssV3_0": {
            "version": "3.0",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C"
          }
        },
        {
          "cvssV2_0": {
            "version": "2.0",
            "baseScore": 4,
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N/E:ND/RL:OF/RC:C"
          }
        }
      ],
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:a2aproject:a2a-java:*:*:*:*:*:*:*:*"
          ],
          "vendor": "a2aproject",
          "modules": [
            "JSON-RPC Error Handler"
          ],
          "product": "a2a-java",
          "versions": [
            {
              "status": "affected",
              "version": "1.2.0.Final"
            },
            {
              "status": "unaffected",
              "version": "1.3.0.Final"
            }
          ]
        }
      ],
      "modified": "2026-10-27T14:18:35.499Z",
      "provider": "cve",
      "references": [
        "https://vuldb.com/vuln/426392",
        "https://vuldb.com/vuln/426392/cti",
        "https://vuldb.com/cve/CVE-2026-116479",
        "https://vuldb.com/submit/1014889",
        "https://github.com/a2aproject/a2a-java/pull/1046",
        "https://github.com/a2aproject/a2a-java/commit/bbee3369f3825d0fba2373d821f6dc6d4fc82ec0",
        "https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final",
        "https://github.com/a2aproject/a2a-java/"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-116479",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-27T13:41:48.514393Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-27T14:18:35.499Z"
            }
          }
        ],
        "cna": {
          "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
          "shortName": "VulDB",
          "dateUpdated": "2026-10-26T19:45:11.028Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116479",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 392640,
  "published_at": "2026-10-26T19:45:11.028+00:00"
}