ChatGPTNextWeb NextChat API Endpoint Next.js cross-domain policy

{
  "id": "8f97e72af9a09db100cc25f20f584ab6f68e002e92e0023efa6fb27484955824",
  "url": "https://osv.dev/vulnerability/CVE-2026-7643",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "ChatGPTNextWeb NextChat API Endpoint Next.js cross-domain policy",
    "summary": "A flaw has been found in ChatGPTNextWeb NextChat up to 2.16.1. This impacts an unknown function of the file Next.js of the component API Endpoint. Executing a manipulation can lead to permissive cross-domain policy with untrusted domains. The attack may be launched remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
    "evidence": "osv:CVE-2026-7643",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-7643",
      "aliases": [
        "CVE-2026-7643"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/chatgptnextweb/nextchat",
              "type": "GIT",
              "events": [
                {
                  "introduced": "377480b448798488db5ef03f4d5c44d2d930693c"
                },
                {
                  "last_affected": "557a2cce357749c6fb3176d42e03ff6f7de4d355"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.16.0"
                      },
                      {
                        "last_affected": "2.16.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2.16.1"
                      },
                      {
                        "last_affected": "2.16.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.16.1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.16.0",
            "2.16.1",
            "v2.16.1",
            "v2.16.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7643.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.251243854Z",
      "provider": "osv",
      "references": [
        "https://github.com/ChatGPTNextWeb/NextChat/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7643.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-7643",
        "https://vuldb.com/submit/806833",
        "https://vuldb.com/vuln/360755",
        "https://github.com/ChatGPTNextWeb/NextChat/issues/6756",
        "https://vuldb.com/vuln/360755/cti"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-346",
          "CWE-942"
        ],
        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7643.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-7643",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519859,
  "published_at": "2026-05-02T14:45:12.877+00:00"
}