{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.1.3"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "940d2df635e06803ef658666d734306942db5cc7"
            }
          ],
          "repo": "https://github.com/bugsink/bugsink",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-fp53-qcf8-2xx2"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44502.json"
  },
  "details": "Bugsink is a self-hosted error tracking tool. Prior to 2.1.3, Bugsink’s webhook URL validation could be (partially) bypassed because of a mismatch in URL parsing. The original validation logic parsed webhook URLs with Python’s urllib.parse.urlparse, then sent the request with requests.post. For malformed inputs involving backslashes and @, those components can disagree about where the authority ends and which hostname is the real target. A URL may therefore appear to target an allowlisted public hostname during validation, while the HTTP client actually connects to a different host. This vulnerability is fixed in 2.1.3.",
  "id": "CVE-2026-44502",
  "modified": "2026-07-08T05:38:39.969895710Z",
  "published": "2026-05-26T16:13:32.350Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/bugsink/bugsink/releases/tag/2.1.3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44502.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/bugsink/bugsink/security/advisories/GHSA-fp53-qcf8-2xx2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44502"
    },
    {
      "type": "FIX",
      "url": "https://github.com/bugsink/bugsink/commit/940d2df635e06803ef658666d734306942db5cc7"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Bugsink: SSRF bypass in `validate_webhook_url`"
}