Plane
CVE-2026-30242
HIGH
GHSA-fpx8-73gf-7x73
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
3DescriptionGitHub Advisory
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.
AnalysisAI
Plane is an an open-source project management tool. [CVSS 8.5 HIGH]
Technical ContextAI
Classified as CWE-918 (Server-Side Request Forgery (SSRF)). Affects Plane. 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 h
RemediationAI
Fixed in version 1.2.3.. Restrict network access to the affected service where possible.
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Unauthenticated attackers can enumerate workspace members and harvest sensitive information including email addresses, u
Stored cross-site scripting in Plane CE 1.3.1 allows an authenticated low-privileged project member to inject arbitrary
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Plane prior to version 1.2.2 allows authenticated users to modify project assets across any workspace by directly refere
Same weakness CWE-918 – Server-Side Request Forgery (SSRF)
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External POC / Exploit Code
Leaving vuln.today