CVE-2026-104973

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.

CVSS 3.1

7.6CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-25)

CWE

CWE-918

Published

2026-10-05

Modified

2026-10-07

Record from

the NVD, synced 2026-10-19

References

• https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615
• https://github.com/makeplane/plane/pull/9163
• https://github.com/makeplane/plane/releases/tag/v1.4.0
• https://github.com/makeplane/plane/security/advisories/GHSA-whh3-5g95-4qhc
• https://github.com/cthackers/adm-zip/security/advisories/GHSA-j5f4-cc29-5x44

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