CVE-2026-27937 October: Reflected XSS via DataTable Form Widget

October is a Content Management System CMS and web platform. Prior to 3.7.16 and 4.1.16, a reflected Cross-Site Scripting XSS vulnerability was identified in the backend DataTable widget where a query parameter was rendered without proper output escaping. This vulnerability is fixed in 3.7.16 and...

CVE-2026-27937

October is a Content Management System CMS and web platform. Prior to 3.7.16 and 4.1.16, a reflected Cross-Site Scripting XSS vulnerability was identified in the backend DataTable widget where a query parameter was rendered without proper output escaping. This vulnerability is fixed in 3.7.16 and...

CVE-2026-27937

October is a Content Management System CMS and web platform. Prior to 3.7.16 and 4.1.16, a reflected Cross-Site Scripting XSS vulnerability was identified in the backend DataTable widget where a query parameter was rendered without proper output escaping. This vulnerability is fixed in 3.7.16 and...

CVE-2026-26274 October: Safe Mode Bypass via Twig Database Write Operations

October is a Content Management System CMS and web platform. Prior to 3.7.14 and 4.1.10, a vulnerability was identified in the Twig sandbox security policy that allowed database write operations when cms.safemode is enabled. Backend users with Developer permissions could use Twig template markup ...

CVE-2026-26274

October is a Content Management System CMS and web platform. Prior to 3.7.14 and 4.1.10, a vulnerability was identified in the Twig sandbox security policy that allowed database write operations when cms.safemode is enabled. Backend users with Developer permissions could use Twig template markup ...

CVE-2026-26067

October is a Content Management System CMS and web platform. Prior to 3.7.14 and 4.1.10, a server-side information disclosure vulnerability was identified in the handling of CSS preprocessor files. Backend users with Editor permissions could craft .less, .sass, or .scss files that leverage the...

CVE-2026-26067 October: Safe Mode Bypass via CSS Preprocessor Compilers

October is a Content Management System CMS and web platform. Prior to 3.7.14 and 4.1.10, a server-side information disclosure vulnerability was identified in the handling of CSS preprocessor files. Backend users with Editor permissions could craft .less, .sass, or .scss files that leverage the...

October security vulnerabilities

October is an open-source content management system CMS and network platform developed by October. Versions prior to October 3.7.14 and 4.1.10 contained security vulnerabilities. These vulnerabilities were due to issues with Twig’s sandbox security policies, which could allow backend users with...

CVE-2026-26067: Incorrect Authorization

October is a Content Management System CMS and web platform. Prior to 3.7.14 and 4.1.10, a server-side information disclosure vulnerability was identified in the handling of CSS preprocessor files. Backend users with Editor permissions could craft .less, .sass, or .scss files that leverage the...

October security vulnerabilities

October is an open-source content management system CMS and network platform developed by October. Versions prior to October 3.7.14 and 4.1.10 contained security vulnerabilities. These vulnerabilities were caused by improper handling of CSS preprocessor files, which could allow backend users with...

CVE-2026-26274: Incomplete List of Disallowed Inputs

October is a Content Management System CMS and web platform. Prior to 3.7.14 and 4.1.10, a vulnerability was identified in the Twig sandbox security policy that allowed database write operations when cms.safemode is enabled. Backend users with Developer permissions could use Twig template markup ...

CVE-2026-29179: Incorrect Authorization

October is a Content Management System CMS and web platform. Prior to 3.7.16 and 4.1.16, fine-grained sub-permission checks for asset and blueprint file operations were not enforced in the CMS and Tailor editor extensions. This only affects backend users who were explicitly granted editor access...

CVE-2026-27937: Improper Neutralization of Input During Web Page Generation

October is a Content Management System CMS and web platform. Prior to 3.7.16 and 4.1.16, a reflected Cross-Site Scripting XSS vulnerability was identified in the backend DataTable widget where a query parameter was rendered without proper output escaping. This vulnerability is fixed in 3.7.16 and...

October Cross-site Scripting Vulnerabilities

October is an open-source content management system CMS and network platform developed by October. Versions prior to October 3.7.16 and 4.1.16 contained a cross-site scripting vulnerability. This vulnerability stemmed from insufficient escaping of query parameters during the rendering of the...

October CMS Has Stored XSS In Event Log Mail Preview

A stored cross-site scripting XSS vulnerability was identified in the Event Log mail preview feature. When viewing logged mail messages, HTML content was rendered in an iframe without proper sandboxing, allowing JavaScript execution in the viewer's browser context. Impact - Stored XSS via mail...

October CMS Has Stored XSS In Backend Editor Markup Classes

A stored cross-site scripting XSS vulnerability was identified in the Backend Editor Settings. The Markup Classes fields used for paragraph styles, inline styles, table styles, etc. did not sanitize input to valid CSS class name characters. Malicious values were rendered unsanitized in Froala...

n8n Webhooks Abused Since October 2025 to Deliver Malware via Phishing Emails

Threat actors have been observed weaponizing n8n, a popular artificial intelligence AI workflow automation platform, to facilitate sophisticated phishing campaigns and deliver malicious payloads or fingerprint devices by sending automated emails. "By leveraging trusted infrastructure, these...

CVE-2026-25133 October CMS has Stored XSS via SVG Filter Bypass

October is a Content Management System CMS and web platform. Versions prior to 3.7.14 and 4.1.10 contain a stored cross-site scripting XSS vulnerability in the SVG sanitization logic. The regex pattern used to strip event handler attributes such as onclick or onload could be bypassed using a...

CVE-2026-25133 October CMS has Stored XSS via SVG Filter Bypass

October is a Content Management System CMS and web platform. Versions prior to 3.7.14 and 4.1.10 contain a stored cross-site scripting XSS vulnerability in the SVG sanitization logic. The regex pattern used to strip event handler attributes such as onclick or onload could be bypassed using a...

CVE-2026-25133

CVE-2026-25133 affects October CMS prior to 3.7.14 and 4.1.10, where a stored XSS can be injected via crafted SVGs uploaded through the Media Manager due to a bypass in the SVG sanitization regex. The vulnerability requires authenticated backend access with media upload permissions and triggers w...