CVE-2026-2735
Undergoing Analysis Undergoing Analysis - In Progress
Stored XSS in OpenCms v18.0 Blog Article Submission

Publication date: 2026-02-19

Last updated on: 2026-02-23

Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)

Description
Stored Cross-Site Scripting (XSS) in Alkacon's OpenCms v18.0, which occurs when user input is not properly validated when sending a POST request to ‘/blog/new-article/org.opencms.ugc.CmsUgcEditService.gwt’ using the ‘text’ parameter.
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Meta Information
Published
2026-02-19
Last Modified
2026-02-23
Generated
2026-06-16
AI Q&A
2026-02-19
EPSS Evaluated
2026-06-15
NVD
CVE-2026-2735
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
alkacon opencms 18.0.0
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in Alkacon's OpenCms version 18.0. It happens because user input is not properly validated when a POST request is made to the endpoint '/blog/new-article/org.opencms.ugc.CmsUgcEditService.gwt' using the 'text' parameter.

Impact Analysis

An attacker could exploit this vulnerability to inject malicious scripts into the application, which would then be stored and executed in the context of other users who view the affected content. This can lead to unauthorized actions, theft of user credentials, session hijacking, or other malicious activities.

Compliance Impact

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