CVE-2026-86271

FluentCMS PermissionManager.cs GetAccessible authorization

State: Published
Severity: 5.1 Medium
Published: Sep 7, 2026
Updated: Sep 9, 2026
Reserved: Sep 6, 2026

Description

A vulnerability was found in FluentCMS up to 0.0.5. This affects the function GetAccessible of the file src/Backend/FluentCMS.Services/Permissions/PermissionManager.cs. Performing a manipulation results in missing authorization. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	4.7 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
3.0	4.7 Medium	CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R	VulDB
2.0	5.8 Medium	AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-862 Missing Authorization
CWE-863 Incorrect Authorization

Affected Products

Product	Versions
FluentCMSn/a	0.0.1Affected 0.0.2Affected 0.0.3Affected 0.0.4Affected 0.0.5Affected

References

VDB-399430 | FluentCMS PermissionManager.cs GetAccessible authorizationvdb-entrytechnical-description
VDB-399430 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-86271 | CVE Analysis and Reportthird-party-advisory
Submit #904824 | FluentCMS 0.0.5 improper authorizationthird-party-advisory
https://github.com/fluentcms/FluentCMS/issues/2409exploitissue-tracking
https://github.com/fluentcms/FluentCMS/product

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