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

Quick assessment

Affected
makeplane plane
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Plane 是一个开源的项目管理工具。在 1.4.0 版本之前，位于 GET /api/workspaces/{slug}/projects/{project_id}/join/{pk}/ 的 ProjectJoinEndpoint 使用了 permission_classes = [AllowAny] 权限设置，并将完整的 ProjectMemberInvite 记录（包括电子邮件地址、令牌和角色）返回给未认证的用户。相应的 POST 端点仅检查提交的电子邮件是否与 project_invite.email 匹配

CVSS 7.4 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
makeplane plane < 1.4.0 affected
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I. Basic Information for CVE-2026-105635

Vulnerability Information
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Vulnerability Title
Plane: Unauthenticated Project Invitation Email Disclosure Enables Unauthorized Project Join Without Token
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
makeplane plane < 1.4.0 -

II. Public POCs for CVE-2026-105635

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III. Intelligence Information for CVE-2026-105635

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Other References for CVE-2026-105635 (4)

Same Patch Batch · makeplane · 2026-10-05 · 38 CVEs total

CVE-2026-105636 9.9 CRITICAL Plane: SSRF via HTTP redirect in webhook delivery (allow_redirects not set)
CVE-2026-105639 9.8 CRITICAL Plane: Pre-auth workspace invitation hijack via email-squat and self-served invitation tok
CVE-2026-105641 9.8 CRITICAL Plane: Hardcoded SECRET_KEY and LIVE_SERVER_SECRET_KEY shipped in aio/cli community deploy
CVE-2026-105637 9.6 CRITICAL Plane: Cross-Project Asset Hijacking via 'ProjectBulkAssetEndpoint' (sibling of CVE-2026-4
CVE-2026-105638 9.1 CRITICAL Plane: Magic-code verifier endpoint has no rate limit, enabling 6-digit OTP brute force
CVE-2026-105640 9.1 CRITICAL Plane: Account Takeover via Unverified OAuth Email Match (Gitea, self-managed GitLab)
CVE-2026-105630 8.7 HIGH Plane: Stored XSS via SVG attachment served inline on the application origin (account take
CVE-2026-104892 8.7 HIGH Plane: Plaintext logging of API token
CVE-2026-104966 8.7 HIGH Plane: Cross-Workspace IDOR in Estimate and Comment Endpoints Allows Read, Modify, and Inj
CVE-2026-104976 8.7 HIGH Plane: SSRF in Gitea OAuth
CVE-2026-104979 8.7 HIGH Plane: Cross-tenant stored XSS in intake enables account takeover
CVE-2026-105632 8.7 HIGH Plane: Broken Access Control - joinProject GraphQL mutation allows self-join into private
CVE-2026-104968 8.7 HIGH Plane: Cross-workspace member enumeration via /api/workspaces/{slug}/entity-search/
CVE-2026-104971 8.5 HIGH Plane: Cross-Workspace Asset Duplication IDOR + WorkspaceFileAssetEndpoint and FileAssetEn
CVE-2026-104978 8.2 HIGH Plane: Invitation Hijack in Project Join Flow via Missing Authorization and Email-Only Acc
CVE-2026-104970 8.1 HIGH Plane: InstanceAdminSignUpEndpoint TOCTOU race allows two concurrent unauthenticated calle
CVE-2026-105634 8.1 HIGH Plane: Privilege Escalation: Project Guest Can Demote Admin/Member Roles
CVE-2026-104974 8.1 HIGH Plane: Disabled User Auto-Reactivation on Login
CVE-2026-104977 7.7 HIGH Plane: Incomplete fix of CVE-2026-27706 — SSRF still reachable on: missing is_blocked_ip (
CVE-2026-104973 7.6 HIGH Plane: DNS Rebinding Bypass of CVE-2026-30242 SSRF Fix in Webhook Delivery

Showing top 20 of 38 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: plane
Same vendor: makeplane
Same weakness: CWE-200

V. Comments for CVE-2026-105635

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