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CVE-2026-24907GHSA-J4J5-9X6G-RGXC

October CMS has Stored XSS via Event Log Mail Preview

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 3.7.14, 4.1.10
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

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, allowing JavaScript execution in the viewer's browser context. This issue has been fixed in versions 3.7.14 and 4.1.10. If users are unable to update immediately, workarounds include restricting mail template editing permissions to fully trusted administrators only and restricting Event Log viewing permissions to minimize exposure.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • octobercms october

    fixed in 3.7.14; From 4.0.0 · fixed in 4.1.10

  • october/systemPackagist

    From 4.0.0 · fixed in 4.1.10

  • october/systemPackagist

    fixed in 3.7.14

References 1

GitHub · octobercms/october