CVE-2022-31358

Name: CVE-2022-31358
Creator: NVD / NIST
Published: 2022-12-14T15:15:10.173+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9/10EPSS 1.27%

Last modified Jun 17, 2026

CVE-2022-31358 is a critical-severity vulnerability rated 9/10 on the CVSS scale. 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/.. EPSS estimates a 1.27% chance of exploitation in the next 30 days.

Description

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/.

Metrics

CVSS 3.1

9/10

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

EPSS Probability

1.27%

66.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Proxmox	Virtual Environment	< 7.2-3

References

http://proxmox.comProduct
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/Exploit, Patch, Technical Description, Third Party Advisory
https://www.proxmox.com/en/Product
http://proxmox.comProduct
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/Exploit, Patch, Technical Description, Third Party Advisory
https://www.proxmox.com/en/Product

Timeline

Published: Dec 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-31358?

How severe is CVE-2022-31358?

CVE-2022-31358 has a CVSS score of 9/10 (CRITICAL severity). The EPSS model estimates a 1.27% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31358?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-31358?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST