Simplephpscripts Simple CMS 2.1 Users admin.php sql injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Simplephpscripts Simple CMS 2.1. Impacted is an unknown function of the file admin.php of the component Users Module. This manipulation causes sql injection. This vulnerability is registered as CVE-2021-47918. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Simplephpscripts Simple CMS 2.1. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the file admin.php of the component Users Module. The manipulation with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was published with Vulnerability-Lab. The advisory is shared at vulnerability-lab.com. This vulnerability is known as CVE-2021-47918 since 02/01/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/12/2026). MITRE ATT&CK project uses the attack technique T1505 for this issue.

By approaching the search of inurl:admin.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2021-34753). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CNA Base Score: 8.1
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Sql injection
CWE: CWE-89 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/01/2026 Advisory disclosed
02/01/2026 +0 days CVE reserved
02/01/2026 +0 days VulDB entry created
02/12/2026 +11 days VulDB entry last update

Sourcesinfo

Advisory: vulnerability-lab.com
Organization: Vulnerability-Lab
Status: Not defined

CNA: VulnCheck
CVE: CVE-2021-47918 (🔒)

GCVE (CVE): GCVE-0-2021-47918
GCVE (VulDB): GCVE-100-343645
EUVD: 🔒

Entryinfo

Created: 02/01/2026 16:34
Updated: 02/12/2026 02:12
Changes: 02/01/2026 16:34 (77), 02/02/2026 00:54 (1), 02/12/2026 02:12 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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