CVE-2026-2735CWE-79

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

Medium · published February 19, 2026

CVSS v4.0
5.1
EPSS
0%
Percentile
18.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
EPSS
0.00272 · 18.6th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-02-19T08:38Z
EPSS history
Timeline
  • 19 FEB 08:38Z
    Stored Cross-Site Scripting (XSS) vulnerability in Alkacon's OpenCms
    cvelistv5