---
id: CVE-2026-87927
title: >-
  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
  sequ…
summary: >-
  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
  sequ…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N'
cwe:
  - CWE-98
vendor: MaxSite
product: MaxSite CMS
affected:
  - cms >= 0.78 <= 109.6
published: '2026-09-09'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:14:00.420'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87927'
references:
  - url: >-
      https://github.com/EviL0rd/maxsite-cve1/blob/main/2026.09.08-maxsite-cms-ajax-lfi-path-traversal.md
    label: disclosure@vulncheck.com
  - url: 'https://github.com/maxsite/cms'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/ajax.php#L17-L42
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/require-maxsite.php#L13-L29
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/maxsite-cms-through-109.6-local-file-inclusion-via-ajax-dispatcher
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-09T18:08:01.250640Z'
ingestedAt: '2026-09-10T14:31:37.998Z'
epss: 0.00588
epssPercentile: 0.45734
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.