CMSimple 5.4 contains a cross-site scripting vulnerability that allows attackers to bypass input filtering by using HTML to Unicode encoding. Attackers can inject malicious scripts by encoding payloads like ')-alert(1)// and execute arbitrary JavaScript when victims interact with delete buttons.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 31 Dec 2025 21:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:cmsimple:cmsimple:5.4:*:*:*:*:*:*:*

Fri, 26 Dec 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 24 Dec 2025 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Cmsimple
Cmsimple cmsimple
Vendors & Products Cmsimple
Cmsimple cmsimple

Tue, 23 Dec 2025 19:45:00 +0000

Type Values Removed Values Added
Description CMSimple 5.4 contains a cross-site scripting vulnerability that allows attackers to bypass input filtering by using HTML to Unicode encoding. Attackers can inject malicious scripts by encoding payloads like ')-alert(1)// and execute arbitrary JavaScript when victims interact with delete buttons.
Title CMSimple 5.4 Cross-Site Scripting via HTML Unicode Encoding
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2025-12-26T13:35:48.283Z

Reserved: 2025-12-23T13:24:04.579Z

Link: CVE-2021-47733

cve-icon Vulnrichment

Updated: 2025-12-26T13:35:44.901Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-23T20:15:44.973

Modified: 2025-12-31T21:43:44.953

Link: CVE-2021-47733

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-24T11:53:20Z

Weaknesses