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TI-2025-11323 Aliases CVE-2025-12346GHSA-cfpx-6j59-hggc

MaxSite CMS HTTP Header uploads-require-maxsite.php unrestricted upload

Priority LOW 24CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass, Code execution
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-284 and CWE-434.

Summary

A vulnerability was detected in MaxSite CMS up to 109. This vulnerability affects unknown code of the file application/maxsite/admin/plugins/auto_post/uploads-require-maxsite.php of the component HTTP Header Handler. Performing manipulation of the argument X-Requested-FileName/X-Requested-FileUpDir results in unrestricted upload. Remote exploitation of the attack is possible. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00396 34th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MaxSiteCMS109—No fix listedCNA
  • CMS VendorMaxSite Affected 109 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:max-3000:maxsite_cms:*:*:*:*:*:*:*:*up to 109VulnerableMax-3000
  • cpe:2.3:a:max-3000:maxsite_cms:*:*:*:*:*:*:*:* Versions up to 109 Vulnerable ·Max-3000

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-12346
  2. 2026-10-03 Alias added: GHSA-cfpx-6j59-hggc

References

Exploit 1

  • TI-2026-59994 MaxSite CMS through 109.6 Authentication Bypass via Hardcoded Encryption Key CVSS 4.0CRITICAL 9.3
  • TI-2026-59992 MaxSite CMS through 109.6 Local File Inclusion via ajax dispatcher CVSS 4.0HIGH 8.8
  • TI-2026-59995 MaxSite CMS through 109.6 PHP Object Injection via ci_session CVSS 4.0CRITICAL 9.2
  • TI-2026-02931 MaxSite CMS MarkItUp Preview AJAX Endpoint preview-ajax.php eval code injection CVSS 4.0MEDIUM 6.9
  • TI-2025-11324 MaxSite CMS save-file-ajax.php unrestricted upload CVSS 4.0MEDIUM 5.3
  • TI-2026-06140 MaxSite CMS ushki Plugin cross site scripting CVSS 4.0MEDIUM 4.8
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences