VDB-243032 · CVE-2023-5524 · GCVE-0-2023-5524

M-Files Web Companion prior 23.8 LTS/23.10 incomplete blacklist

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in M-Files Web Companion. It has been declared as critical. This impacts an unknown function. Such manipulation leads to incomplete blacklist. This vulnerability is uniquely identified as CVE-2023-5524. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in M-Files Web Companion and classified as critical. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a incomplete blacklist vulnerability. Using CWE to declare the problem leads to CWE-184. The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete, leading to resultant weaknesses. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Insufficient blacklisting in M-Files Web Companion before release version 23.10 and LTS Service Release Versions before 23.8 LTS SR1 allows Remote Code Execution via specific file types

The weakness was disclosed 10/20/2023. This vulnerability is handled as CVE-2023-5524 since 10/11/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1562.006.

Upgrading to version 23.8 LTS or 23.10 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

M-Files

Name

Web Companion

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.3
NVD Vector: 🔍

CNA Base Score: 8.2
CNA Vector (M-Files Corporation): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Incomplete blacklist
CWE: CWE-184 / CWE-183 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Web Companion 23.8 LTS/23.10

Timelineinfo

10/11/2023 🔍
10/20/2023 +9 days 🔍
10/20/2023 +0 days 🔍
02/23/2026 +857 days 🔍

Sourcesinfo

Advisory: m-files.com
Status: Confirmed

CVE: CVE-2023-5524 (🔍)
GCVE (CVE): GCVE-0-2023-5524
GCVE (VulDB): GCVE-100-243032

Entryinfo

Created: 10/20/2023 10:11
Updated: 02/23/2026 12:23
Changes: 10/20/2023 10:11 (45), 11/11/2023 20:58 (2), 11/11/2023 21:06 (12), 08/28/2024 11:42 (16), 02/23/2026 12:23 (1)
Complete: 🔍
Cache ID: 216::103