All vulnerabilities

Servers and applications

GHSA-8qmj-6mj5-55pm

Stored XSS via Untrusted Client Filename Extension in Attachment Disk Name

Severity
Medium 5.4
Published
1 Nov 2026
Last changed
1 Nov 2026
Added to UpHeron
3 Nov 2026
Fixed in
4.3.5
Sources
Project advisories (GitHub)

Affected software

SoftwareAffected versions
October CMSServers and applications · github:octobercms/october
  • From 4.0.0 before 4.3.5

References