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Description

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.

PUBLISHED Reserved 2026-06-05 | Published 2026-06-06 | Updated 2026-06-06 | Assigner VulDB




MEDIUM: 4.8CVSS: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
LOW: 2.4CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
LOW: 2.4CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
3.3AV:N/AC:L/Au:M/C:N/I:P/A:N/E:POC/RL:ND/RC:UR

Problem types

Cross Site Scripting

Code Injection

Timeline

2026-06-05:VulDB entry created
2026-06-06:Advisory disclosed
2026-06-06:VulDB entry last update

Credits

Karina Gante finder

karinagante (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/369014 (VDB-369014 | FluentCMS Blocks Plugin blocks cross site scripting) vdb-entry

vuldb.com/vuln/369014/cti (VDB-369014 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-11434 (CVE-2026-11434 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/821094 (Submit #821094 | FluentCMS 0.0.5 Cross Site Scripting) third-party-advisory

hackmd.io/@noka/BkHdIMFAWx exploit

cve.org (CVE-2026-11434)

nvd.nist.gov (CVE-2026-11434)

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