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CVE-2021-47918

Simple CMS 2.1 SQL Injection Vulnerability via Users Module

Published: Feb 1, 2026Updated: Feb 11, 2026 Sources: CVE List NVDCWE-89
NVD MITRE
8.1CVSSHIGH
EPSS Score
0.5%
Top 60.6%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

Description

Simple CMS 2.1 contains a remote SQL injection vulnerability that allows privileged attackers to inject unfiltered SQL commands in the users module. Attackers can exploit unvalidated input parameters in the admin.php file to compromise the database management system and web application.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-89

Affected Products

simple cms phpsimplephpscripts
On-prem
Web & CMS Plugins / cms-core
Simple CMSSimplephpscripts
On-prem
Web & CMS Plugins / cms-core
simplephpscriptsWeb & CMS Pluginsaka simple cms, classified ads script

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

1 technique
Initial Access
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References

https://simplephpscripts.com/simple-cms-php
simplephpscripts.com
https://www.vulncheck.com/advisories/simple-cms-sql-injection-vulnerability-via-users-module2
vulncheck.com
https://www.vulnerability-lab.com/get_content.php?id=2303
vulnerability-lab.com

Timeline

Published
Feb 1, 2026
Last Updated
Feb 11, 2026

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