{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c346119fe870b70f5c19738ee5119f3e1456e59d"
            }
          ],
          "repo": "https://github.com/ag-ui-protocol/ag-ui",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulDB",
    "cwe_ids": [
      "CWE-459"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101100.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "2026-09-07"
          },
          {
            "last_affected": "2026-09-07"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "A flaw has been found in ag-ui-protocol ag-ui up to 2026-09-07. This vulnerability affects the function FilterToolCallsMiddleware of the file sdks/typescript/packages/client/src/middleware/filter-tool-calls.ts of the component Middleware. Executing a manipulation can lead to incomplete cleanup. The attack may be launched remotely. Upgrading to version 2026-09-08 is able to resolve this issue. This patch is called c346119fe870b70f5c19738ee5119f3e1456e59d. It is suggested to upgrade the affected component.",
  "id": "CVE-2026-101100",
  "modified": "2026-09-30T03:30:19.235883972Z",
  "published": "2026-09-28T17:30:15.988Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ag-ui-protocol/ag-ui/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101100.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101100"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/cve/CVE-2026-101100"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/submit/934980"
    },
    {
      "type": "ADVISORY",
      "url": "https://vuldb.com/vuln/410975"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ag-ui-protocol/ag-ui/issues/2443"
    },
    {
      "type": "REPORT",
      "url": "https://vuldb.com/vuln/410975/cti"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ag-ui-protocol/ag-ui/commit/c346119fe870b70f5c19738ee5119f3e1456e59d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ag-ui-protocol/ag-ui/pull/2494"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X",
      "type": "CVSS_V4"
    }
  ],
  "summary": "ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanup"
}