High 8.5Published Mar 6, 2026

CVE-2026-30242Plane: SSRF via Incomplete IP Validation in Webhook URL Serializer

Updated under an hour ago (Oct 28, 2026, 1:00 AM ET)

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It affects makeplane plane and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for makeplane plane

Exploited in the last 30 days

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: 8.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Weakness (CWE): CWE-918
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

makeplane plane makeplane:plane (from the name)	before 1.2.3	CNA record
plane plane plane:plane	before 1.2.3	NVD

References

References

https://github.com/makeplane/plane/security/advisories/GHSA-fpx8-73gf-7x73	x-refsource-confirm, vendor-advisory
https://github.com/makeplane/plane/releases/tag/v1.2.3	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.