CVE-2026-102981 Details
Description
Plane is an open-source project management tool. Prior to 1.4.0, self-hosted Plane deployments allow unauthenticated GET requests to api/workspaces/{slug}/invitations/{pk}/join/ through WorkspaceJoinEndpoint, whose WorkSpaceMemberInviteSerializer exposes the secret invitation token directly and through get_invite_link. An external attacker can retrieve a token intended for another user and submit it to the invitation acceptance flow, joining the workspace without receiving the invitation and gaining the role assigned to the invite. This issue is fixed in version 1.4.0.
A vulnerability in self-hosted Plane deployments prior to version 1.4.0 allows unauthenticated users to access workspace invitation tokens through a public API endpoint. The exposed tokens can be used to join workspaces without the original invitation, potentially leading to unauthorized access and privileges within the workspace. This issue arises because the invitation retrieval endpoint does not require authentication and returns sensitive invitation details, including the token, in the response.
Upgrade to Plane version 1.4.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 13, 2026CISA-ADP
Assessed Oct 16, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/makeplane/plane/commit/6220ba990b2276a1a1979d1d5df68f650b8b47ad | [email protected] | Source CodeVendor |
| https://github.com/makeplane/plane/pull/9297 | [email protected] | Issue TrackingVendor |
| https://github.com/makeplane/plane/releases/tag/v1.4.0 | [email protected] | Release NotesVendor |
| https://github.com/makeplane/plane/security/advisories/GHSA-gf48-p6jp-cwc4 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| makeplane Plane | <= 1.3.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 16, 2026 | CVE Modified | CISA-ADP |
| Oct 13, 2026 | New CVE Received | [email protected] |