---
cve: "CVE-2026-33590"
severity: "HIGH"
cvss: 8.5
epss: "0.5%"
vendor: "portainer"
kev: false
exploited: false
published: "2026-05-28 19:30:06"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-29T06:30:55+02:00"
---

# CVE-2026-33590

> 8.5 HIGH · 🧪 PoC

## Beschreibung

Insecure default settings of Portainer CE grant regular (non-admin) users privileges that allow host filesystem access and host-level code execution. An authenticated non-administrative user with endpoint access can exploit these settings to read host files or obtain root equivalent 

access on the host.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 3e2fdb1891e81a8e4c5c8beb60e45f07c8ecae52 (Commit)
- ac8fa7672e732b44b970c9eaf928eddd2c68796c (Commit)

## Referenzen

- <https://intwave.com/blog/2026/02/26/improving-portainer-security.html>
- <https://github.com/portainer/portainer/commit/ac8fa7672e732b44b970c9eaf928eddd2c68796c>
- <https://github.com/portainer/portainer/commit/3e2fdb1891e81a8e4c5c8beb60e45f07c8ecae52>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-33590) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_