CVE-2026-2736 MEDIUM

CVE-2026-2736: Reflected Cross-Site Scripting (XSS) vulnerability in Alkacon's OpenCms

Vendor Alkacon
Product OpenCms
Weakness CWE-79 · XSS
Published February 19, 2026
Last update March 9, 2026
View on NVD All CVEs

CVSS base score

5.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 19, 2026 CVE published
March 9, 2026 Record updated