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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Multiple

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Fluentcms
  • Fluentcms

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References
Link Providers
https://github.com/fluentcms/FluentCMS/ cve-icon cve-icon
https://github.com/fluentcms/FluentCMS/issues/2409 cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-86271 cve-icon cve-icon
https://vuldb.com/submit/904824 cve-icon cve-icon
https://vuldb.com/vuln/399430 cve-icon cve-icon
https://vuldb.com/vuln/399430/cti cve-icon cve-icon
History

Wed, 09 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 07 Sep 2026 05:00:00 +0000

Type Values Removed Values Added
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.
Title FluentCMS PermissionManager.cs GetAccessible authorization
First Time appeared Fluentcms
Fluentcms fluentcms
Weaknesses CWE-862
CWE-863
CPEs cpe:2.3:a:fluentcms:fluentcms:*:*:*:*:*:*:*:*
Vendors & Products Fluentcms
Fluentcms fluentcms
References
Metrics cvssV2_0

{'score': 5.8, 'vector': 'AV:N/AC:L/Au:M/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 4.7, 'vector': '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'}

cvssV3_1

{'score': 4.7, 'vector': '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'}

cvssV4_0

{'score': 5.1, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-09-07T04:30:11.124Z

Updated: 2026-09-09T14:14:47.102Z

Reserved: 2026-09-06T12:51:03.719Z

Link: CVE-2026-86271

cve-icon Vulnrichment

Updated: 2026-09-09T14:14:41.595Z

cve-icon NVD

Status : Deferred

Published: 2026-09-07T05:16:55.210

Modified: 2026-09-09T15:17:15.700

Link: CVE-2026-86271

cve-icon Redhat

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