Omnispace Agora Project before 26.10.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject malicious script by submitting a crafted forum category description containing a double-quote character that breaks out of an HTML input value attribute. Attackers can exploit the HTMLPurifier configuration that preserves double-quotes to escape the attribute context and execute arbitrary script in the browser of users viewing the forum category.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-79"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63171.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"fixed": "26.10.0"
}
],
"source": "AFFECTED_FIELD"
},
{
"extracted_events": [
{
"fixed": "26.10.0"
}
],
"source": "DESCRIPTION"
}
]
}