What is the CVSS score of CVE-2022-31358?

CVE-2022-31358 has a CVSS 3.1 base score of 9.0 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H. EPSS exploitation probability: 1.3%.

Is there a public PoC exploit available for CVE-2022-31358?

Yes, a public proof-of-concept exploit is available for CVE-2022-31358. Prioritise patching immediately. EPSS: 1.3%.

Virtual Environment CVE-2022-31358

CRITICAL

Cross-site Scripting (XSS) (CWE-79)

2022-12-14 cve@mitre.org

XSS Virtual Environment

9.0

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.0 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 14, 2022 - 15:15 nvd

CRITICAL 9.0

DescriptionNVD

AnalysisAI

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. Rated critical severity (CVSS 9.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. 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/. Affected products include: Proxmox Virtual Environment.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.