PostHog database_schema Server-Side Request Forgery Information Disclosure Vulnerability

{
  "id": "10705e26b5b378e0dfc6727c73943169e98634017ea4e1ee3c2ea8937c0b3da2",
  "url": "https://osv.dev/vulnerability/CVE-2025-1522",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "PostHog database_schema Server-Side Request Forgery Information Disclosure Vulnerability",
    "summary": "PostHog database_schema Server-Side Request Forgery Information Disclosure Vulnerability. This vulnerability allows remote attackers to disclose sensitive information on affected installations of PostHog. Authentication is required to exploit this vulnerability. The specific flaw exists within the implementation of the database_schema method. The issue results from the lack of proper validation of a URI prior to accessing resources. An attacker can leverage this vulnerability to disclose information in the context of the service account. Was ZDI-CAN-25358.",
    "evidence": "osv:CVE-2025-1522",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-1522",
      "aliases": [
        "CVE-2025-1522"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/posthog/posthog",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b8817c14065c23159dcf52849f0bdcd12516c43e"
                },
                {
                  "fixed": "3732c0fd9551ed29521b58611bf1e44d918c1032"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "b8817c14065c23159dcf52849f0bdcd12516c43e"
                      },
                      {
                        "last_affected": "b8817c14065c23159dcf52849f0bdcd12516c43e"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3732c0fd9551ed29521b58611bf1e44d918c1032"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "b8817c14065c23159dcf52849f0bdcd12516c43e"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-1522.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.822367551Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1522.json",
        "https://github.com/PostHog/posthog/commit/3732c0fd9551ed29521b58611bf1e44d918c1032",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-1522",
        "https://www.zerodayinitiative.com/advisories/ZDI-25-097/"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "zdi",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/1xxx/CVE-2025-1522.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-1522",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 505183,
  "published_at": "2025-04-23T16:45:44.643+00:00"
}