API Key Exposure in Plane Open-Source Project Management Tool by MakePlane
CVE-2026-104892

8.7HIGH

Key Information:

Vendor

Makeplane

Status
Plane
Vendor
CVE Published:
5 October 2026

What is CVE-2026-104892?

The Plane project management tool by MakePlane contains a vulnerability that affects versions prior to 1.4.0. In this version, the aPITokenLogMiddleware component logs API keys in plaintext. This vulnerability allows users with low privileges to potentially access and steal sensitive API keys, which could lead to privilege escalation and unauthorized access to user accounts and data. The issue has been addressed and resolved 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/9148
x_refsource_MISC
https://github.com/makeplane/plane/commit/edf247541301e48...
x_refsource_MISC

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.