CVE-2022-31358

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

1.27% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 67.8% of scored records. A rank, not a probability.

NVD base score

9.0 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-07-09.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-12-14 00:00Z3 YR AGO

Last updated

2026-07-09 00:19Z1 MO AGO

Reserved

2022-05-23

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Critical (CVSS 9.0)

CNA CVSS vector

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

Weaknesses

• CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base

Data version

5.2

Document digest

f2272d2182a9b2896a1369640f20cf6c4d647dbea81aa3bfcf9be0ce449a6ed6

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