{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "7.6.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a5f23e314f1a933d31aa650616bf9cd84bd0407e"
            },
            {
              "fixed": "69042ec969d30c52cb9ec9519af5e30a1ed26f46"
            }
          ],
          "repo": "https://github.com/lycheeorg/lychee",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-vj35-v9x5-vrxh"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-367",
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57569.json"
  },
  "details": "Lychee is a free, open-source photo-management tool. Prior to 7.6.0, the POST /api/v2/Photo::fromUrl flow validates a hostname and its resolved addresses in app/Rules/PhotoUrlRule.php but later passes the original hostname through app/Actions/Import/FromUrl.php to app/Image/Files/DownloadedFile.php for a separate fopen connection. An authenticated attacker who controls DNS responses can cause validation to observe a public address and the subsequent fetch to resolve the same hostname to a private or otherwise forbidden address. This DNS rebinding time-of-check to time-of-use mismatch bypasses the intended server-side request forgery protections and can reach services available from the Lychee server, subject to deployment and TLS behavior. This issue is fixed in version 7.6.0.",
  "id": "CVE-2026-57569",
  "modified": "2026-10-17T02:30:38.721473779Z",
  "published": "2026-10-15T16:24:34.652Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57569.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-vj35-v9x5-vrxh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57569"
    },
    {
      "type": "FIX",
      "url": "https://github.com/LycheeOrg/Lychee/commit/a5f23e314f1a933d31aa650616bf9cd84bd0407e"
    },
    {
      "type": "FIX",
      "url": "https://github.com/LycheeOrg/Lychee/pull/4344"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Lychee: Distinct post-fix SSRF variant in Photo::fromUrl due to missing IP pinning after DNS-based validation"
}