CVE
CVE-2026-30242
Plane has SSRF via Incomplete IP Validation in Webhook URL Serializer
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
Package Versions Affected
Package Version
patch Availability
No items found.
Automatically patch vulnerabilities without upgrading
Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request
CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
C
H
U
-
Related Resources
No items found.
References
https://github.com/makeplane/plane/security/advisories/GHSA-fpx8-73gf-7x73, https://nvd.nist.gov/vuln/detail/CVE-2026-30242, https://github.com/makeplane/plane, https://github.com/makeplane/plane/releases/tag/v1.2.3
Basic Information
Ecosystem
