CVE-2021-47860

GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCE

MEDIUM
4.3
CVSS Score
Published: January 21, 2026 at 05:29 PM UTC
Updated: June 17, 2026 at 04:18 AM UTC
3 products affected across 3 vendorsGetsimple CMSGetsimple CMSCustom JS

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

GetSimple CMS Custom JS 0.1 plugin contains a cross-site request forgery vulnerability that allows unauthenticated attackers to inject arbitrary client-side code into administrator browsers. Attackers can craft a malicious website that triggers a cross-site scripting payload to execute remote code on the hosting server when an authenticated administrator visits the page.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (6)

ExploitThird Party AdvisoryVDB Entry
Source: cverecord
https://www.exploit-db.com/exploits/49816
Product
Source: cverecord
http://get-simple.info
Technical DescriptionExploitThird Party Advisory
Source: cverecord
https://github.com/boku7/gsCMS-CustomJS-Csrf2Xss2Rce
ExploitThird Party AdvisoryVDB Entry
Source: cverecord
https://www.exploit-db.com/exploits/49712

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-352

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