CVE-2026-30242

Plane: SSRF via Incomplete IP Validation in Webhook URL Serializer

CVSS 8.5 HIGHEPSS 0.3%CWE-918

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.5EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

06 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Affected products

makeplane · plane

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References

https://github.com/makeplane/plane/releases/tag/v1.2.3 https://github.com/makeplane/plane/security/advisories/GHSA-fpx8-73gf-7x73