PT-2026-3812 · Getsimple Cms+1 · Custom Js Plugin+1

Published 2026-01-21 · Updated 2026-01-21 · CVE-2021-47860

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions GetSimple CMS Custom JS version 0.1

Description A cross-site request forgery issue allows unauthenticated attackers to inject arbitrary client-side code into administrator browsers. This can be achieved by crafting a malicious website that triggers a cross-site scripting payload, potentially leading to remote code execution on the hosting server when an authenticated administrator visits the page.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2021-47860

Affected Products

Custom Js Plugin

Getsimple Cms

References · 8

• 🔥 https://github.com/boku7/gsCMS-CustomJS-Csrf2Xss2Rce · Exploit
• 🔥 https://exploit-db.com/exploits/49816 · Exploit
• 🔥 https://exploit-db.com/exploits/49712 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-47860 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47860 · Vendor Advisory
• https://github.com/GetSimpleCMS/GetSimpleCMS · Note
• https://vulncheck.com/advisories/getsimple-cms-custom-js-csrf-to-xss-to-rce · Note
• http://get-simple.info · Note