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 valid CSS class name characters. Malicious values were rendered unsanitized in Froala editor dropdown menus, allowing JavaScript execution when any user opened a RichEditor. Exploitation could lead to privilege escalation if a superuser opens any RichEditor during routine content editing (e.g., editing a blog post), and requires authenticated backend access with editor settings permissions. This issue has been fixed in versions 3.7.14 and 4.1.10. To workaround this issue, restrict editor settings permissions to fully trusted administrators only

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/octobercms/october/security/advisories/GHSA-6qmh-j78v-ffp7	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:octobercms:october::::::::
	cpe:2.3:a:octobercms:october::::::::

History

21 Apr 2026, 17:24

Type	Values Removed	Values Added
CPE		cpe:2.3:a:octobercms:october::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.4
First Time		Octobercms october Octobercms
References	~~() https://github.com/octobercms/october/security/advisories/GHSA-6qmh-j78v-ffp7 -~~	() https://github.com/octobercms/october/security/advisories/GHSA-6qmh-j78v-ffp7 - Vendor Advisory

14 Apr 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-14 18:16

Updated : 2026-06-17 10:23

NVD link : CVE-2026-24906

Mitre link : CVE-2026-24906

CVE.ORG link : CVE-2026-24906

JSON object : View

Products Affected

octobercms

october

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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