Cross-site scripting in baserCMS - CVE-2026-93463
Published: September 29, 2026
Vulnerability identifier: #VU152768
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-93463
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute scripts in the browsers of visitors.
The vulnerability exists due to improper neutralization of script content in BcValidation::containsScript() when validating user-supplied content. A remote user can store crafted scripts in content to execute scripts in the browsers of visitors.
A visitor must view the stored content.
Affected software
baserCMS
How to mitigate CVE-2026-93463
Install security update from vendor's website.
baserCMS - addressed in versions 5.3.1, 5.4.1