Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-87927

CVE-2026-87927HIGH

MaxSite CMS through 109.6 Local File Inclusion via ajax dispatcher

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   L   H   N    8.8   .0059   46.2     —

AFFECTED
  Product      Versions  Fixed
  MaxSite CMS  0.78 –    —

TIMELINE
  Sep 9   Reserved by VulnCheck
  Sep 9   Published (CNA: VulnCheck)
  Sep 24  EXPLOIT PUBLISHED — CVE-2026-87927 (MaxSite CMS). Public exploit reference added.

CWE-98 · CNA: VulnCheck · CVSS v4.0 · 5 references · NVD status: Deferred

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
September 9, 2026	Reserved	Reserved by VulnCheck
September 9, 2026	Published	Published (CNA: VulnCheck)
September 24, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-87927 (MaxSite CMS). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
MaxSite	MaxSite CMS	—	0.78	—

Weaknesses

CWE-98

References (5)

https://github.com/EviL0rd/maxsite-cve1/blob/main/2026.09.08-maxsite-cms-ajax-lfi-path-traversal.md [exploit, technical-description]
https://github.com/maxsite/cms [product]
https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/ajax.php#L17-L42 [technical-description]
https://github.com/maxsite/cms/blob/2ca0a0c7d1d71106a25dbb0f2aedaaefbf12802c/application/views/require-maxsite.php#L13-L29 [technical-description]
https://www.vulncheck.com/advisories/maxsite-cms-through-109.6-local-file-inclusion-via-ajax-dispatcher [third-party-advisory]

Authoritative record: CVE-2026-87927 at cve.org

Vendors: maxsite

Weaknesses: CWE-98

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-87927 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.