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Tool Directory

CVE-2021-28935

MediumPublished

CMS Made Simple (CMSMS) 2.2.15 allows authenticated XSS via the /admin/addbookmark.php script through the Site Admin > My Preferences > Title field.

Published: Mar 30, 2021
Updated: Aug 3, 2024
Assigning CNA: mitre
Evidence observed: Apr 22, 2021

Primary CVSS

5.4/ 10Medium

nvd · CVSS 3.1

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

EPSS probability estimate

1.6%

Low · next 30 days

Percentile: 73.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

CMS Made Simple (CMSMS) 2.2.15 allows authenticated XSS via the /admin/addbookmark.php script through the Site Admin > My Preferences > Title field.

Sources

CMS Made Simple 2.2.15 - 'title' Cross-Site Scripting (XSS)Exploit
bt0 · php · Apr 22, 2021

Responsible use

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