What’s Vulnerable › Vulnerabilities

CVE-2026-105635: Plane: Unauthenticated Project Invitation Email Disclosure Enables Unauthorized Project Join Without Token

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-05 · updated 2026-10-05
• Weakness: CWE-200

Description

Plane is an open-source project management tool. Prior to 1.4.0, ProjectJoinEndpoint at GET /api/workspaces/{slug}/projects/{project_id}/join/{pk}/ uses permission_classes = [AllowAny] and returns the full ProjectMemberInvite record, including its email, token, and role, to unauthenticated callers. The corresponding POST endpoint checks only whether the submitted email matches project_invite.email and does not validate the invitation token. An attacker who knows the invitation UUID can discover the invited email, register an account with that email, and accept the invitation without receiving the original invite. This issue is fixed in 1.4.0.

Affected products

• makeplane plane: before 1.4.0

References

• https://github.com/makeplane/plane/commit/4b52dce76e8aa97a8d87166fa8f4441c1cf646b1
• https://github.com/makeplane/plane/pull/9305
• https://github.com/makeplane/plane/releases/tag/v1.4.0
• https://github.com/makeplane/plane/security/advisories/GHSA-2r58-hgv7-635q
• https://github.com/makeplane/plane/security/advisories/GHSA-2r58-hgv7-635q

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