---
title: "CVE-2026-87927: MaxSite CMS - Local File Inclusion"
description: "MaxSite CMS <= 109.6 contains a local file inclusion vulnerability caused by base64-encoded path traversal sequences in ajax and require-maxsite dispatchers, letting unauthenticated attackers execute privileged handler files bypassing path validation."
url: https://panop.io/threat-heartbeat/CVE-2026-87927/
---

# CVE-2026-87927 MaxSite CMS - Local File Inclusion

MaxSite CMS <= 109.6 contains a local file inclusion vulnerability caused by base64-encoded path traversal sequences in ajax and require-maxsite dispatchers, letting unauthenticated attackers execute privileged handler files bypassing path validation.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.59% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-87927)

## Details

Type

Local File Inclusion

Impact

File System Read, Privilege Escalation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

Published

9 September 2026

Updated

15 October 2026

Weakness

[CWE-98](https://cwe.mitre.org/data/definitions/98.html)

## Vendor fix

Update to the latest version beyond 109.6.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-87927](https://nvd.nist.gov/vuln/detail/CVE-2026-87927)
- [https://github.com/EviL0rd/maxsite-cve1/blob/main/2026.09.08-maxsite-cms-ajax-lfi-path-traversal.md](https://github.com/EviL0rd/maxsite-cve1/blob/main/2026.09.08-maxsite-cms-ajax-lfi-path-traversal.md)
- [https://github.com/maxsite/cms](https://github.com/maxsite/cms)
- [https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/ajax.php#L17-L42](https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/ajax.php#L17-L42)
- [https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/require-maxsite.php#L13-L29](https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/require-maxsite.php#L13-L29)
- [https://www.vulncheck.com/advisories/maxsite-cms-through-109.6-local-file-inclusion-via-ajax-dispatcher](https://www.vulncheck.com/advisories/maxsite-cms-through-109.6-local-file-inclusion-via-ajax-dispatcher)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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