EUVD-2026-75109
GHSA-wxg4-xmxc-6qm6
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Unauthenticated network-accessible LFI with no complexity barrier; C:L because primary impact is admin action bypass rather than direct arbitrary file read, I:H for unrestricted admin handler execution enabling configuration and data modification.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Local file inclusion in MaxSite CMS through 109.6 allows unauthenticated remote attackers to execute privileged PHP handler files by supplying base64-encoded path traversal sequences to the ajax and require-maxsite dispatcher endpoints. The encoding technique bypasses the dispatchers' path validation logic, enabling attackers to reach admin-gated handler actions entirely without credentials. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The target must be running MaxSite CMS version 0.78 through 109.6 with the web-accessible dispatcher endpoints (application/views/ajax.php or application/views/require-maxsite.php) reachable over HTTP or HTTPS. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N, score 8.8) aligns well with the described behavior: unauthenticated, network-reachable, low-complexity exploitation with high integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patched version has been identified in the available data; the upstream repository should be monitored for a fix release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running MaxSite CMS and document version numbers (affected: 0.78-109.6); immediately implement or update web application firewall rules to block requests containing base64-encoded path sequences to the ajax and require-maxsite endpoints, and restrict network access to these endpoints to known administrators only. …
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Same weakness CWE-98 – PHP Remote File Inclusion
View allSame technique Path Traversal
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External POC / Exploit Code
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