23 Oct 2026 15:48:27 UTC
MaxSite CMS 109.5 Unauthenticated AJAX Dispatcher Bypass via ajax.php
cve-program · CVE-2026-70552 · Published
CVE-2026-70552
MaxSite CMS 109.5 Unauthenticated AJAX Dispatcher Bypass via ajax.php
CVSS 4.0 9.3 CRITICALCVSS 3.1 9.8 CRITICALCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-70552
PublishedMaxSite CMS 109.5 and earlier contains an authentication bypass vulnerability in the AJAX dispatcher that allows unauthenticated attackers to access admin-gated endpoints by supplying any X-Requested-With header and requesting a base64-encoded path resolving to any *-ajax.php file in the codebase. Attackers can exploit this dispatcher bypass to reach privileged plugin endpoints without credentials, enabling actions such as manipulating poll states and vote counts, and amplifying the impact of any dangerous operation performed by admin-only ajax files across the plugin tree.
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Exploitation and risk
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