CVE-2026-86271CWE-862CWE-863broken-access-control

CVE-2026-86271

Medium · published September 7, 2026

CVSS v3.1
4.7
EPSS
0%
Percentile
32.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
5.1 · 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
EPSS
0.00396 · 32.6th percentile
Weaknesses
CWE-862 · Missing Authorization; CWE-863 · Incorrect Authorization
Published
2026-09-07T09:16Z
References (6)
https://github.com/fluentcms/FluentCMS/ · [email protected]https://github.com/fluentcms/FluentCMS/issues/2409 · [email protected]https://vuldb.com/cve/CVE-2026-86271 · [email protected]https://vuldb.com/submit/904824 · [email protected]https://vuldb.com/vuln/399430 · [email protected]https://vuldb.com/vuln/399430/cti · [email protected]
EPSS history
Timeline
  • 08 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 07 SEP 04:30Z
    FluentCMS PermissionManager.cs GetAccessible authorization
    cvelistv5