What’s Vulnerable › Vulnerabilities
CVE-2026-2735: Stored Cross-Site Scripting (XSS) vulnerability in Alkacon's OpenCms
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-02-19 · updated 2026-06-17
- Weakness: CWE-79
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.
Affected products
- Alkacon OpenCms: 18.0.0
References
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