CVE-2023-4805Public exploitNetwork attack vector

Subscriber-level script execution via unescaped profile names

Published Oct 16, 2023 · Updated Apr 23, 2025

Stored XSS in Themeum Tutor LMS before 2.3.0 allows remote authenticated users to execute script in another user's browser via profile name settings. The profile update path stores unsanitized first-name or last-name input and later renders it unescaped on the dashboard. Subscriber access is sufficient, and execution occurs when a user loads the affected dashboard page, exposing data and actions available to that browser session.

CVSS severity5.4
Medium
EPSS probability0.40%
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 2.3.0 allows remote authenticated users to execute script in another user's browser via profile name settings. The profile update path stores unsanitized first-name or last-name input and later renders it unescaped on the dashboard. Subscriber access is sufficient, and execution occurs when a user loads the affected dashboard page, exposing data and actions available to that browser session.

The record

CVE
CVE-2023-4805
Published
Oct 16, 2023
Updated
Apr 23, 2025
Vendor
Themeum
Product
Tutor LMS
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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 <2.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Themeum · Tutor LMSversion=0 <2.3.0

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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