FastGPT: workflow runtime can execute another user's private HTTP toolset

{
  "id": "96a8b5e7f53e6f4cd116867a99a9e92414dcefc25df996ded17e53850991bc60",
  "url": "https://osv.dev/vulnerability/CVE-2026-61643",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "FastGPT: workflow runtime can execute another user's private HTTP toolset",
    "summary": "FastGPT is a knowledge-based AI application platform. From 4.14.17 until 4.15.0-beta5, an authenticated FastGPT user can save a workflow node that points to another user's private HTTP toolset by using a crafted saved tool id such as http-/. The normal toolset routes deny access, but the workflow save and runtime path did not apply the same authorization check to the referenced toolset, allowing /api/v2/chat/completions to resolve the saved reference and execute the victim-owned HTTP tool. This issue is fixed in version 4.15.0-beta5.",
    "evidence": "osv:CVE-2026-61643",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-61643",
      "aliases": [
        "CVE-2026-61643",
        "GHSA-93r3-wqq3-c5ch"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/labring/fastgpt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b1b97cbdebb9dc2a1c7b60cd9cd59d52d15c08e4"
                },
                {
                  "fixed": "0c1840c7773c5be5d777f86228651479e02155db"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "4.14.17"
                      },
                      {
                        "fixed": "4.15.0-beta5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "0c1840c7773c5be5d777f86228651479e02155db"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v4.15.0-beta5"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.15.0-beta5"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61643.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:25.898368581Z",
      "provider": "osv",
      "references": [
        "https://github.com/labring/FastGPT/releases/tag/v4.15.0-beta5",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61643.json",
        "https://github.com/labring/FastGPT/security/advisories/GHSA-93r3-wqq3-c5ch",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-61643"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61643.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-61643",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 492597,
  "published_at": "2026-07-15T17:03:22.325+00:00"
}