CVE-2026-87927: Maxsite CMS

High severity, CVSS 8.2. EPSS: 0.6% chance of exploitation in the next 30 days.

MaxSite CMS through 109.6 contains a local file inclusion vulnerability in the ajax and require-maxsite dispatchers that allows unauthenticated attackers to execute privileged handler files by supplying base64-encoded path traversal sequences. Attackers can bypass path validation checks and execute admin-gated handler actions without authentication to access sensitive functionality.

Affected products

• Maxsite Maxsite CMS: from 0.78, up to and including 109.6

Published 2026-09-09. Last modified 2026-09-09.