CVE-2026-104973
Plane: DNS Rebinding Bypass of CVE-2026-30242 SSRF Fix in Webhook Delivery
- State
- Published
- Severity
- 7.6 High
- Published
- Oct 5, 2026
- Updated
- Oct 7, 2026
- Reserved
- Oct 2, 2026
Description
Plane is an open-source project management tool. Prior to 1.4.0, the fix for CVE-2026-30242 validates webhook IP addresses only when the webhook is created in apps/api/plane/app/serializers/webhook.py. The delivery task in apps/api/plane/bgtasks/webhook_task.py performs a separate DNS resolution when sending the request and does not validate the resolved IP address, allowing DNS rebinding to bypass the SSRF protection. This issue is fixed in 1.4.0.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.6 High | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N | GitHub_M |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
planemakeplane |
|
References
- https://github.com/makeplane/plane/security/advisories/GHSA-whh3-5g95-4qhc
- https://github.com/makeplane/plane/pull/9163
- https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615
- https://github.com/makeplane/plane/releases/tag/v1.4.0
- https://github.com/cthackers/adm-zip/security/advisories/GHSA-j5f4-cc29-5x44exploit
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