Dify Has Broken Access Control on Log Message Endpoint Allows Reading of Chats of Others

{
  "id": "445409261b77d46dcd743ba87612ff6c4446d65f792792a9114bad4e09a16dd4",
  "url": "https://osv.dev/vulnerability/CVE-2025-59422",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Dify Has Broken Access Control on Log Message Endpoint Allows Reading of Chats of Others",
    "summary": "Dify is an open-source LLM app development platform. In version 1.8.1, a broken access control vulnerability on the /console/api/apps/chat-messages?conversation_id=&limit=10 endpoint allows users in the same workspace to read chat messages of other users. A regular user is able to read the query data and the filename of the admins and probably other users chats, if they know the conversation_id. This impacts the confidentiality of chats. This issue has been patched in version 1.9.0.",
    "evidence": "osv:CVE-2025-59422",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-59422",
      "aliases": [
        "CVE-2025-59422",
        "GHSA-jg5j-c9pq-w894"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/langgenius/dify",
              "type": "GIT",
              "events": [
                {
                  "introduced": "c7700ac1762a4feccf60211d3dca3e39ec65a83c"
                },
                {
                  "fixed": "b2d8a7eaf1693841411934e2056042845ab4f354"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "= 1.8.1"
                      },
                      {
                        "last_affected": "= 1.8.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b2d8a7eaf1693841411934e2056042845ab4f354"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.8.1",
            "= 1.8.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-59422.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.157391278Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59422.json",
        "https://github.com/langgenius/dify/security/advisories/GHSA-jg5j-c9pq-w894",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-59422",
        "https://github.com/langgenius/dify/commit/b2d8a7eaf1693841411934e2056042845ab4f354"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-284"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59422.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-59422",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500429,
  "published_at": "2025-09-25T13:19:11.385+00:00"
}