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CVE-2026-27937

Low

Description

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 4.1.16.

SeverityLow
CVSS3.1
Exploit probability—
ProductOctober/system
PublishedApr 21, 2026
First seenApr 21, 2026
Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update
  • october/system3.7.16 or later

Affected products

ProductAffected versionsFixed in
october/systemPackagistv < 3.7.16, 4.0.0 ≤ v3.7.16

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