CVE-2026-2736CWE-79

Reflected Cross-Site Scripting (XSS) vulnerability in Alkacon's OpenCms

Medium · published February 19, 2026

CVSS v4.0
5.1
EPSS
0%
Percentile
22.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
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
EPSS
0.00305 · 22.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-02-19T08:39Z
EPSS history
Timeline
  • 19 FEB 08:39Z
    Reflected Cross-Site Scripting (XSS) vulnerability in Alkacon's OpenCms
    cvelistv5