Web Application Vulnerability in Plane Project Management Tool by Makeplane
CVE-2026-104973

7.6HIGH

Key Information:

Vendor

Makeplane

Status
Plane
Vendor
CVE Published:
5 October 2026

What is CVE-2026-104973?

The Plane project management tool, prior to version 1.4.0, suffers from a vulnerability that compromises its server-side request forgery (SSRF) protections. The issue arises from inadequate validation of resolved IP addresses during webhook delivery, permitting malicious DNS rebinding attacks. This creates a potential vector for unauthorized access and exploitation. The vulnerability was specifically highlighted in the webhook handling components of the application, with a fix implemented in version 1.4.0.

Affected Version(s)

plane < 1.4.0

References

https://github.com/makeplane/plane/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/makeplane/plane/pull/9163
x_refsource_MISC
https://github.com/makeplane/plane/commit/04622ce1188c468...
x_refsource_MISC

CVSS V3.1

Score:
7.6
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.