CVE-2022-4112Network attack vector

Stored script execution via unescaped settings

Published Dec 19, 2022 · Updated Apr 17, 2025

Stored XSS in VMS Studio Quizlord 2.0 and earlier allows remote authenticated users to inject scripts through plugin settings. The plugin stores some settings without sanitizing input and renders them without escaping output; the published record does not identify the fields or functions. Administrator privileges are required, even where unfiltered_html is disabled, and a user must view the affected page for the script to execute in that user's browser.

CVSS severity4.8
Medium
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in VMS Studio Quizlord 2.0 and earlier allows remote authenticated users to inject scripts through plugin settings. The plugin stores some settings without sanitizing input and renders them without escaping output; the published record does not identify the fields or functions. Administrator privileges are required, even where unfiltered_html is disabled, and a user must view the affected page for the script to execute in that user's browser.

The record

CVE
CVE-2022-4112
Published
Dec 19, 2022
Updated
Apr 17, 2025
Vendor
VMS Studio
Product
Quizlord
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 19, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 17, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

VMS Studio · Quizlordversion=0 <=2.0

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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