CRITICAL: CVE-2022-31358 (CVSS 9) — proxmox virtual environment

CVE: CVE-2022-31358

CVSS: 9 (3.1) — CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Severity: CRITICAL

Status: Critical advisory

Affected

• proxmox virtual environment

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/.

Verified Sources

• NVD entry
• GitHub Advisory
• MITRE

References

• https://git.proxmox.com/?p=pve-http-server.git;a=commitdiff;h=00661f1223b7c0afffa64e1d91f5e018b985f762
• https://starlabs.sg/blog/2022/12-multiple-vulnerabilites-in-proxmox-ve--proxmox-mail-gateway/
• https://www.proxmox.com/en/
• http://proxmox.com
• https://git.proxmox.com/?p=pve-http-server.git%3Ba=commitdiff%3Bh=00661f1223b7c0afffa64e1d91f5e018b985f762
• https://starlabs.sg/blog/2022/12-multiple-vulnerabilites-in-proxmox-ve--proxmox-mail-gateway/
• https://www.proxmox.com/en/

_Validated by the Lyrie Threat Intelligence Pipeline — 3 independent sources confirmed before publication. No speculation._