Cyber Resilience

CVE-2024-33423

HighPublic PoC

Published: 01 May 2024

Published
01 May 2024
Modified
14 April 2025
KEV Added
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Patch
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CVSS Score v3.1 7.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
EPSS Score 0.0023 46.1th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2024-33423 is a high-severity Basic XSS (CWE-80) vulnerability in Cmsimple Cmsimple. Its CVSS base score is 7.4 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique JavaScript (T1059.007); ranked at the 46.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

Cross-Site Scripting (XSS) vulnerability in the Settings menu of CMSimple v5.15 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Logout parameter under the Language section.

CWE(s)
CWE-80

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
attack.mitre.org →
T1539 Steal Web Session Cookie Credential Access
An adversary may steal web application or service session cookies and use them to gain access to web applications or Internet services as an authenticated user without needing credentials.
attack.mitre.org →
Why these techniques?

XSS enables arbitrary JavaScript execution in the browser context of users viewing the admin settings page (T1059.007), facilitating theft of session cookies via standard XSS payloads (T1539).

Affected Assets

cmsimple
cmsimple
5.15

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References