Mikado-mes ChapterOne Plugin up to 1.7 on WordPress filename control

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 (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Mikado-mes ChapterOne Plugin up to 1.7 on WordPress. This impacts an unknown function. The manipulation results in filename control. This vulnerability is reported as CVE-2026-40731. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in Mikado-mes ChapterOne Plugin up to 1.7 on WordPress. Affected is an unknown function. The manipulation with an unknown input leads to a filename control vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Unauthenticated Local File Inclusion in ChapterOne <= 1.7 versions.

The weakness was disclosed by João Pedro S Alcântara. The advisory is shared for download at patchstack.com. This vulnerability is traded as CVE-2026-40731 since 04/15/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 06/17/2026).

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

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

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

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

CVSSv2info

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

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

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

04/15/2026 CVE reserved
06/17/2026 +63 days Advisory disclosed
06/17/2026 +0 days VulDB entry created
06/17/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: patchstack.com
Researcher: João Pedro S Alcântara
Status: Not defined

CVE: CVE-2026-40731 (🔒)
GCVE (CVE): GCVE-0-2026-40731
GCVE (VulDB): GCVE-100-371952

Entryinfo

Created: 06/17/2026 14:21
Changes: 06/17/2026 14:21 (63)
Complete: 🔍
Cache ID: 216::103

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