Craft has a SSRF in GraphQL Asset Mutation via Alternative IP Notation

{
  "id": "3cdcf91c8822c15b0ff12e77370ba5ae460dad0a825b2d49e1f9ab3e70a2398e",
  "url": "https://osv.dev/vulnerability/CVE-2026-25494",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Craft has a SSRF in GraphQL Asset Mutation via Alternative IP Notation",
    "summary": "Craft is a platform for creating digital experiences. In Craft versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, the saveAsset GraphQL mutation uses filter_var(..., FILTER_VALIDATE_IP) to block a specific list of IP addresses. However, alternative IP notations (hexadecimal, mixed) are not recognized by this function, allowing attackers to bypass the blocklist and access cloud metadata services. This issue is patched in versions 4.16.18 and 5.8.22.",
    "evidence": "osv:CVE-2026-25494",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-25494",
      "aliases": [
        "CVE-2026-25494",
        "GHSA-m5r2-8p9x-hp5m"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/craftcms/cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "04755d93f86d07cc183db47db8a0eee106892e30"
                },
                {
                  "fixed": "8e23a7a14d50f169c10a487348c993384d479e06"
                },
                {
                  "fixed": "d49e93e5ba0c48939ce5eaa6cd9b4a990542d8b2"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "5.0.0-RC1"
                      },
                      {
                        "fixed": "5.8.22"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d49e93e5ba0c48939ce5eaa6cd9b4a990542d8b2"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "8e23a7a14d50f169c10a487348c993384d479e06"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "5.8.22"
                  }
                ]
              }
            },
            {
              "repo": "https://github.com/nystudio107/craft-seomatic",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a31f7d211b52d55d274c66a291310ceec64c733f"
                },
                {
                  "last_affected": "a31f7d211b52d55d274c66a291310ceec64c733f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.0.0-NA"
                      },
                      {
                        "last_affected": "4.0.0-NA"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.0.0-NA",
            "4.0.0-rc1",
            "4.0.0-rc2",
            "4.0.0-rc3",
            "5.0.0-rc1",
            "4.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25494.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:40.572591413Z",
      "provider": "osv",
      "references": [
        "https://github.com/craftcms/cms/releases/tag/5.8.22",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25494.json",
        "https://github.com/craftcms/cms/security/advisories/GHSA-m5r2-8p9x-hp5m",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-25494",
        "https://github.com/craftcms/cms/commit/d49e93e5ba0c48939ce5eaa6cd9b4a990542d8b2"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25494.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-25494",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 508257,
  "published_at": "2026-02-09T19:41:13.085+00:00"
}