{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "source": "REFERENCES"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c3a9f997899fbd18b91d25b45ec45c93c689ba55"
            }
          ],
          "repo": "https://github.com/makeplane/plane",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-fpx8-73gf-7x73"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30242.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "fixed": "1.2.3"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Plane is an an open-source project management tool. Prior to version 1.2.3, the webhook URL validation in plane/app/serializers/webhook.py only checks ip.is_loopback, allowing attackers with workspace ADMIN role to create webhooks pointing to private/internal network addresses (10.x.x.x, 172.16.x.x, 192.168.x.x, 169.254.169.254, etc.). When webhook events fire, the server makes requests to these internal addresses and stores the response — enabling SSRF with full response read-back. This issue has been patched in version 1.2.3.",
  "id": "CVE-2026-30242",
  "modified": "2026-08-05T03:30:20.062019228Z",
  "published": "2026-03-06T21:19:24.386Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/makeplane/plane/releases/tag/v1.2.3"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30242.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/makeplane/plane/security/advisories/GHSA-fpx8-73gf-7x73"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30242"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Plane: SSRF via Incomplete IP Validation in Webhook URL Serializer"
}