{"id":"CVE-2026-30242","aliases":["GHSA-fpx8-73gf-7x73"],"url":"https://o3.security/vulnerability/CVE-2026-30242","summary":"Plane: SSRF via Incomplete IP Validation in Webhook URL Serializer","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.","published":"2026-03-06T21:19:24.386Z","modified":"2026-08-07T11:48:13.004277513Z","cvss":{"score":8.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"plane","fixedVersion":"1.2.3"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:48:13.004277513Z"}}