Proxmox Virtual Environment: Mehrere Schwachstellen
WID-SEC-2026-2417 · first 20.07.2026 · updated 20.07.2026 · CVSS 7,2
What it is about
Proxmox Virtual Environment (PVE) ist eine Virtualisierungsplattform für Server. Ein Angreifer kann mehrere Schwachstellen in Proxmox Virtual Environment ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, Sicherheitsmaßnahmen zu umgehen und vertrauliche Informationen offenzulegen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Cross-Site Scripting Angriff durchzuführen
- Sicherheitsmaßnahmen zu umgehen
- vertrauliche Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Proxmox Virtual Environment widget-toolkit
- Proxmox Virtual Environment datacenter-manager-ui
- Proxmox Virtual Environment ibrust-proxmox-yew-comp-dev
- Proxmox Virtual Environment pve-manager
- Proxmox Virtual Environment qemu-server
- Proxmox Virtual Environment pve-container
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- GitHub Security Advisory GHSA-QQMV-HGV3-7GX2 vom 2026-07-19 github.com
- GitHub Security Advisory GHSA-QQMV-HGV3-7GX2 vom 2026-07-19 github.com
- GitHub Security Advisory GHSA-3q5r-q6qf-qq6p vom 2026-07-19 github.com
CVE: CVE-2026-51081, CVE-2026-51082, CVE-2026-51083
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.