GHSA-6QMH-J78V-FFP7 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...

Protection Mechanism Failure

Overview Affected versions of this package are vulnerable to Protection Mechanism Failure in the collect process. An attacker can gain unauthorized access to restricted template functionality by leveraging insufficient sandbox restrictions when authenticated with backend access and template editi...

CVE-2026-24906

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 Backend Editor Settings. The Markup Classes fields used for paragraph styles, inline styles, table styles, etc. did not sanitize input to...

CVE-2026-24907 October CMS has Stored XSS via Event Log Mail Preview

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 Event Log mail preview feature. When viewing logged mail messages, HTML content was rendered in an iframe without proper sandboxing,...

CVE-2026-24907

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 Event Log mail preview feature. When viewing logged mail messages, HTML content was rendered in an iframe without proper sandboxing,...

CVE-2026-24907

CVE-2026-24907 affects October CMS: versions prior to 3.7.14 and 4.1.10 contain a stored XSS in the Event Log mail preview feature. HTML is rendered in an iframe without proper sandboxing when viewing logged mail messages, allowing JavaScript execution in the viewer’s browser context. The issue i...

CVE-2026-24907 October CMS has Stored XSS via Event Log Mail Preview

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 Event Log mail preview feature. When viewing logged mail messages, HTML content was rendered in an iframe without proper sandboxing,...

CVE-2026-24907 October CMS has Stored XSS via Event Log Mail Preview

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 Event Log mail preview feature. When viewing logged mail messages, HTML content was rendered in an iframe without proper sandboxing,...

CVE-2026-24906

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 Backend Editor Settings. The Markup Classes fields used for paragraph styles, inline styles, table styles, etc. did not sanitize input to...

CVE-2026-24906 October CMS has Stored XSS in its Backend Editor Markup Classes

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 Backend Editor Settings. The Markup Classes fields used for paragraph styles, inline styles, table styles, etc. did not sanitize input to...

CVE-2026-24906 October CMS has Stored XSS in its Backend Editor Markup Classes

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 Backend Editor Settings. The Markup Classes fields used for paragraph styles, inline styles, table styles, etc. did not sanitize input to...

CVE-2026-24906 October CMS has Stored XSS in its Backend Editor Markup Classes

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 Backend Editor Settings. The Markup Classes fields used for paragraph styles, inline styles, table styles, etc. did not sanitize input to...

CVE-2026-24906

October CMS versions 3.7.0–3.7.13 and 4.1.0–4.1.9 are affected by a Stored XSS in Backend Editor Settings. The vulnerability stems from unsanitized input in the Markup Classes field used for paragraph, inline, and table styles, which could render JavaScript in Froala editor dropdowns when a user ...

CVE-2026-22692 October CMS: Twig Sandbox Bypass via Collection Methods

October is a Content Management System CMS and web platform. Versions prior to 3.7.13 and versions 4.0.0 through 4.1.4 contain a sandbox bypass vulnerability in the optional Twig safe mode feature CMSSAFEMODE. Certain methods on the collect helper were not properly restricted, allowing...

CVE-2026-22692 October CMS: Twig Sandbox Bypass via Collection Methods

October is a Content Management System CMS and web platform. Versions prior to 3.7.13 and versions 4.0.0 through 4.1.4 contain a sandbox bypass vulnerability in the optional Twig safe mode feature CMSSAFEMODE. Certain methods on the collect helper were not properly restricted, allowing...

CVE-2026-22692 October CMS: Twig Sandbox Bypass via Collection Methods

October is a Content Management System CMS and web platform. Versions prior to 3.7.13 and versions 4.0.0 through 4.1.4 contain a sandbox bypass vulnerability in the optional Twig safe mode feature CMSSAFEMODE. Certain methods on the collect helper were not properly restricted, allowing...

CVE-2026-22692

CVE-2026-22692 affects October CMS Twig sandbox (CMS_SAFE_MODE). Vulnerable in versions prior to 3.7.13 and 4.0.0–4.1.4; fixed in 3.7.13 and 4.1.5. Root cause: collect()->mapInto() on SafeCollection bypasses SecurityPolicy, allowing authenticated template editors to bypass sandbox. Exploitatio...

April 14, 2026—KB5082127 (Monthly Rollup)

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Exploit for CVE-2026-22692

CVE-2026-22692: Critical Twig Sandbox Bypass via collect-ma...

October 跨站脚本漏洞

October is an open-source content management system CMS and online platform developed by October. Versions prior to October 3.7.14 and 4.1.10 contained a cross-site scripting vulnerability. This vulnerability stemmed from improper handling of marker class field inputs in the backend editor...