CVE-2026-2735
Stored Cross-Site Scripting (XSS) vulnerability in Alkacon's OpenCms
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.
INFO
Published Date :
Feb. 19, 2026, 8:38 a.m.
Last Modified :
Feb. 19, 2026, 8:38 a.m.
Remotely Exploit :
Yes !
Source :
INCIBE
Affected Products
The following products are affected by CVE-2026-2735
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | 0cbda920-cd7f-484a-8e76-bf7f4b7f4516 |
Solution
- Validate and sanitize user input for the 'text' parameter.
- Implement strict input validation on the server-side.
- Update OpenCms to the latest secure version.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-2735 vulnerability anywhere in the article.