CVE-2026-2736
Medium
Description
Reflected Cross-site Scripting (XSS) in Alkacon's OpenCms v18.0, which allows an attacker to execute JavaScript code in the victim's browser by sending the victim a malicious URL containing the ‘q’ parameter in ‘/search/index.html’. This vulnerability can be exploited to steal sensitive user information such as session cookies, or to perform actions while impersonating the user.
SeverityMedium
CVSS6.1
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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