CMSimple 5.4 filename control

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability was found in CMSimple 5.4. It has been declared as problematic. The affected element is an unknown function. Executing a manipulation can lead to filename control. This vulnerability is tracked as CVE-2021-47734. The attack is restricted to local execution. Moreover, an exploit is present.

Detailsinfo

A vulnerability has been found in CMSimple 5.4 and classified as problematic. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a filename control vulnerability. The CWE definition for the vulnerability is CWE-98. The PHP application receives input from an upstream component, but it does not restrict or incorrectly restricts the input before its usage in "require," "include," or similar functions. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

CMSimple 5.4 contains an authenticated local file inclusion vulnerability that allows remote attackers to manipulate PHP session files and execute arbitrary code. Attackers can leverage the vulnerability by changing the functions file path and uploading malicious PHP code through session file upload mechanisms.

The weakness was disclosed by S1lv3r as 50547. The advisory is available at exploit-db.com. This vulnerability was named CVE-2021-47734 since 12/23/2025. The exploitation appears to be easy. Local access is required to approach this attack. Technical details are unknown but a public exploit is available.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept.

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 Exploit-DB (50547). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CNA Base Score: 7.8
CNA Vector (VulnCheck): 🔒

CVSSv2info

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

Exploitinginfo

Class: Filename control
CWE: CWE-98
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

12/23/2025 Advisory disclosed
12/23/2025 +0 days CVE reserved
12/23/2025 +0 days VulDB entry created
01/05/2026 +13 days VulDB entry last update

Sourcesinfo

Advisory: 50547
Researcher: S1lv3r
Status: Not defined

CVE: CVE-2021-47734 (🔒)
GCVE (CVE): GCVE-0-2021-47734
GCVE (VulDB): GCVE-100-337882
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/23/2025 22:22
Updated: 01/05/2026 15:29
Changes: 12/23/2025 22:22 (77), 01/01/2026 03:55 (11), 01/05/2026 15:29 (5)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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