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.
{
"cna_assigner": "INCIBE",
"cwe_ids": [
"CWE-79"
],
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "18.0"
},
{
"last_affected": "18.0"
}
],
"source": "AFFECTED_FIELD"
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2735.json"
}