CVE-2026-11434

LOW 2.4

FluentCMS Blocks Plugin blocks cross site scripting

CVSS Score

2.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79 CWE-94
Vendor	n/a
Product	fluentcms
Published	Jun 6, 2026
Last Updated	Jun 10, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / FluentCMS

0.0.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/369014 vuldb.com: https://vuldb.com/vuln/369014/cti vuldb.com: https://vuldb.com/cve/CVE-2026-11434 vuldb.com: https://vuldb.com/submit/821094 karinagante.github.io: https://karinagante.github.io/cve-2026-11434/ karinagante.github.io: https://karinagante.github.io/cve-2026-11434/#proof-of-concept-poc hackmd.io: https://hackmd.io/@noka/BkHdIMFAWx

Credits

Karina Gante (CVE-Hunters) 🔍 karinagante (VulDB User) karinagante (VulDB User) VulDB CNA Team