CVE-2026-104978
highPlane is an open-source project management tool.
Plane is an open-source project management tool. Prior to 1.4.0, Plane's project invitation list endpoint is accessible to any authenticated user who knows the workspace slug and project ID, while the public project invitation join endpoint accepts an invitation based only on a submitted email address. When a pending invitation targets an email address that has not registered with Plane, an attacker can enumerate the invitation, register an account using the invited email without mailbox verification, and accept the invitation. The attacker-controlled account is then added to the target workspace and project. This issue is fixed in 1.4.0.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/makeplane/plane/commit/14a4c22f94eac1582439e41112213f976c6a6cf7 security-advisories@github.com
- https://github.com/makeplane/plane/pull/9308 security-advisories@github.com
- https://github.com/makeplane/plane/releases/tag/v1.4.0 security-advisories@github.com
- https://github.com/makeplane/plane/security/advisories/GHSA-g36h-p63v-g9c7 security-advisories@github.com
- https://github.com/makeplane/plane/security/advisories/GHSA-g36h-p63v-g9c7 134c704f-9b21-4f2e-91b3-4a467353bcc0