# CVE-2026-87927

## Summary

- **CVE ID:** CVE-2026-87927
- **Severity:** HIGH
- **CVSS Score:** 8.8 (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)
- **CWE:** CWE-98
- **Published:** Sep 9, 2026
- **Last Modified:** Sep 9, 2026

## Description

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.

## Affected Products

- MaxSite — MaxSite CMS (0.78)

## References

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

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._