GHSA-FPX8-73GF-7X73

Vulnerability from github – Published: 2026-03-05 21:43 – Updated: 2026-03-09 13:12
VLAI?
Summary
Plane has SSRF via Incomplete IP Validation in Webhook URL Serializer
Details

Summary

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.

Impact

  • Cloud metadata exfiltration: Access AWS/GCP/Azure instance metadata (IAM credentials, tokens)
  • Internal service scanning: Probe internal network services not exposed to the internet
  • Data exfiltration via response logs: Full response body from internal services is stored and returned to the attacker through the webhook logs API
  • Bypass vectors: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 169.254.0.0/16, 0.0.0.0, ::ffff: mapped addresses
Severity ?
8.5 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 1.2.1"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "plane"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-30242"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-05T21:43:15Z",
    "nvd_published_at": "2026-03-06T22:16:01Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nThe 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 \u2014 enabling SSRF with full response read-back.\n\n### Impact\n- **Cloud metadata exfiltration**: Access AWS/GCP/Azure instance metadata (IAM credentials, tokens)\n- **Internal service scanning**: Probe internal network services not exposed to the internet\n- **Data exfiltration via response logs**: Full response body from internal services is stored and returned to the attacker through the webhook logs API\n- Bypass vectors: `10.0.0.0/8`, `172.16.0.0/12`, `192.168.0.0/16`, `169.254.0.0/16`, `0.0.0.0`, `::ffff:` mapped addresses",
  "id": "GHSA-fpx8-73gf-7x73",
  "modified": "2026-03-09T13:12:11Z",
  "published": "2026-03-05T21:43:15Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/makeplane/plane/security/advisories/GHSA-fpx8-73gf-7x73"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-30242"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/makeplane/plane"
    },
    {
      "type": "WEB",
      "url": "https://github.com/makeplane/plane/releases/tag/v1.2.3"
    }
  ],
  "schema_version": "1.4.0",
  "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 has SSRF via Incomplete IP Validation in Webhook URL Serializer"
}


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