CVE-2026-2735
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
Product
Alkacon Opencms
PublishedFeb 19, 2026
First seenFeb 19, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| alkacon opencms | 18.0.0 | — |
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