CVE-2022-2563Public exploitNetwork attack vector

Stored script execution via unescaped course names

Published Oct 17, 2022 · Updated May 13, 2025

Stored XSS in Themeum Tutor LMS before 2.0.10 allows remote authenticated users to execute script through crafted course content. The course builder stores unescaped Topic Name and Lesson Name values, then renders them into editable markup that executes event-handler code. Administrator privileges are required, and execution occurs when a user edits the affected topic or lesson.

CVSS severity4.8
Medium
EPSS probability0.61%
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 Themeum Tutor LMS before 2.0.10 allows remote authenticated users to execute script through crafted course content. The course builder stores unescaped Topic Name and Lesson Name values, then renders them into editable markup that executes event-handler code. Administrator privileges are required, and execution occurs when a user edits the affected topic or lesson.

The record

CVE
CVE-2022-2563
Published
Oct 17, 2022
Updated
May 13, 2025
Vendor
Themeum
Product
Tutor LMS
Classifications
CWE-79, CAPEC-63, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 17, 2022CVE publishedPublication date reported by the CVE source.
  2. May 13, 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=2.0.10 <2.0.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Themeum · Tutor LMSversion=2.0.10 <2.0.10

Published CVSS scores

4.8NIST NVDCVSS: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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

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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