CVE-2026-11434CWE-79CWE-94

FluentCMS Blocks Plugin blocks cross site scripting

Medium · published June 6, 2026

CVSS v4.0
4.8
EPSS
0%
Percentile
18.8
In the wild
Unconfirmed
What it is

A weakness has been identified in FluentCMS 0.0.5. The impacted element is an unknown function of the file /admin/blocks of the component Blocks Plugin. This manipulation causes cross site scripting. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

The record
Technical detail
CVSS v4.0
4.8 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
EPSS
0.00275 · 18.8th percentile
Weaknesses
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'); CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-06-06T14:15Z
EPSS history
Timeline
  • 06 JUN 14:15Z
    FluentCMS Blocks Plugin blocks cross site scripting
    cvelistv5