October is a Content Management System (CMS) and web platform. Prior to versions 3.7.13 and 4.0.12, a cross-site scripting (XSS) vulnerabilities was identified in October CMS backend configuration forms. A user with the Customize Backend Styles permission could inject malicious HTML/JS into the stylesheet input at Styles from Branding & Appearance settings. A specially crafted input could break out of the intended <style> context, allowing arbitrary script execution across backend pages for all users. This issue has been patched in versions 3.7.13 and 4.0.12.
{
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/61xxx/CVE-2025-61676.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.0.12"
}
],
"source": "AFFECTED_FIELD"
}
],
"cwe_ids": [
"CWE-79"
]
}{
"cpe": "cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "3.7.13"
}
],
"source": [
"AFFECTED_FIELD",
"CPE_RANGE"
]
}