---
cve: "CVE-2026-52780"
severity: "CRITICAL"
cvss: 9.6
epss: "0.4%"
vendor: "opf"
kev: false
exploited: false
published: "2026-06-26 20:17:18"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T11:00:07+02:00"
---

# CVE-2026-52780

> 9.6 CRITICAL · 🧪 PoC

## Beschreibung

OpenProject is open-source, web-based project management software. Prior to 17.3.3 and 17.4.1, cache store poisoning leads to Remote Code Execution (RCE). This vulnerability is fixed in 17.3.3 and 17.4.1.

## CVSS-Vektor

```
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Benachbart | warn |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 5ee515c5c80c3aaf1e7527f63e4e69798aef1b29 (Commit)
- 8203fc2286fd48d7d72f52b3c4a2487f96fcea28 (Commit)

## Referenzen

- <https://github.com/opf/openproject/security/advisories/GHSA-qj96-f42f-6336>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-52780) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_