Description
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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| MaxSite | MaxSite CMS | 0.78 – ≤ 109.6 | — |
References
- https://github.com/maxsite/cms product
- https://github.com/EviL0rd/maxsite-cve1/blob/main/2026.09.08-maxsite-cms-ajax-lfi-path-traversal.md exploit technical-description
- https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/ajax.php#L17-L42 technical-description
- https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/require-maxsite.php#L13-L29 technical-description
- VulnCheck Advisory: MaxSite CMS through 109.6 Local File Inclusion via ajax dispatcher third-party-advisory