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CVE-2020-23839

MediumPublished

A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index.php login portal webpage, allows remote attackers to...

Published: Sep 1, 2020
Updated: Aug 4, 2024
Assigning CNA: mitre
Evidence observed: Mar 30, 2021

Primary CVSS

6.1/ 10Medium

nvd · CVSS 3.1

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

EPSS probability estimate

10.5%

Moderate · next 30 days

Percentile: 95.6%
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

A Reflected Cross-Site Scripting (XSS) vulnerability in GetSimple CMS v3.3.16, in the admin/index.php login portal webpage, allows remote attackers to execute JavaScript code in the client's browser and harvest login credentials after a client clicks a link, enters credentials, and submits the login form.

Sources

CVE-2020-23839Exploit
Public PoC Disclosure for CVE-2020-23839 - GetSimple CMS v3.3.16 suffers from a Reflected XSS on the Admin Login Portal
GetSimple CMS 3.3.16 - Persistent Cross-Site ScriptingExploit
boku · php · Mar 30, 2021

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