MaxSite CMS 109.5 Unauthenticated AJAX Dispatcher Bypass via ajax.php
MaxSite 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.
CVE-2026-70552
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-70552
MaxSite CMS
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "MaxSite",
"product": "MaxSite CMS",
"versions": [
{
"status": "affected",
"version": "0.78",
"versionType": "custom",
"lessThanOrEqual": "109.5"
},
{
"status": "unaffected",
"version": "109.6",
"versionType": "custom"
}
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-70552
Source reference:
/cveMetadata/cveId
Publisher severity
critical
Source reference: /containers/cna/metrics
- Event
- #936 · Revision 1
- Added to Heist Feed
- Publisher date