CVE-2022-31358
CriticalCVSS 9.0Exploitation Probability (EPSS)
Elevated risk66th percentile - higher than 66% of all known CVEs
Summary
A reflected cross-site scripting (XSS) vulnerability in Proxmox Virtual Environment prior to v7.2-3 allows remote attackers to execute arbitrary web scripts or HTML via non-existent endpoints under path /api2/html/.
Risk Assessment
An attacker can exploit this vulnerability to steal user sessions, redirect to malicious sites, or perform other actions in the victim's browser context, compromising data confidentiality and integrity in the organization.
Recommendation
Immediately update Proxmox Virtual Environment to version 7.2-3 or later, which includes a fix for this vulnerability.
Other vulnerabilities in Proxmox Virtual Environment
See all- CVE-2026-51083Medium
Incorrect access control in Proxmox Virtual Environment (PVE) 9.x qemu-server before 9.1.8 and 8.x before 8.4.8 allows users with limited privileges to obtain hashed passwords via the cloudinit/dump API.
- CVE-2026-51082High
A race condition between the vncproxy and vncwebsocket API calls in Proxmox Virtual Environment (PVE) 9.x and 8.x allows an attacker with privileges to call vncproxy to hijack a VNC session established in parallel by a different user for a different VM.
- CVE-2026-51081Medium
A cross-site scripting (XSS) vulnerability in Proxmox Virtual Environment (PVE) 9.x 5.1.8 and 8.x 4.3.16 allows attackers to inject malicious scripts or HTML. The flaw exists in input handling, enabling arbitrary code execution in the victim's browser.
Original NVD description (English source)
A reflected cross-site scripting (XSS) vulnerability in Proxmox Virtual Environment prior to v7.2-3 allows remote attackers to execute arbitrary web scripts or HTML via non-existent endpoints under path /api2/html/.