---
cve: "CVE-2026-105632"
severity: "HIGH"
cvss: 8.7
epss: "0.3%"
vendor: "makeplane"
kev: false
exploited: false
published: "2026-10-05 18:17:36"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-09T21:34:13+02:00"
---

# CVE-2026-105632

> 8.7 HIGH · 🧪 PoC

## Beschreibung

Plane is an open-source project management tool. Prior to 1.4.0, the GraphQL joinProject mutation lets any workspace member add themselves to any project in that workspace including network=0 (secret/private) projects they were never invited to and grants them a full Member role (read + write). The resolver checks only workspace-level membership/role and never checks the target project's visibility (network). This collapses project-level tenant isolation within a workspace: a low-privilege member can read and modify confidential data in every private project. This issue is fixed in 1.4.0.

## CNA-Record (Kanon, cvelistV5)

- CNA: **GitHub_M**
- State: PUBLISHED
- Stand: 2026-10-05 19:13:21
- CNA-CVSS: **8.7** (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- e1ef42023ab66b5e722a8750e1bc5ba0d413a3ee (Commit)
- 917b23a6c16d93fc00cef67900eff2755e8b13f7 (Commit)

## Referenzen

- <https://github.com/makeplane/plane/security/advisories/GHSA-45hc-q4mw-jhxm>
- <https://github.com/makeplane/plane/pull/9333>
- <https://github.com/makeplane/plane/commit/e1ef42023ab66b5e722a8750e1bc5ba0d413a3ee>
- <https://github.com/makeplane/plane/releases/tag/v1.4.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-105632/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_