CVE-2025-12346

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

HIGH
8.8
CVSS Score
Published: October 28, 2025 at 02:02 AM UTC
Updated: October 8, 2026 at 11:10 AM UTC
2 products affected across 2 vendorsMaxsite CMSMaxSite CMS

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Severity
HIGH8.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

VDB EntryTechnical DescriptionThird Party Advisory
Source: cverecord
https://vuldb.com/?id.330136
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.330136
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.674551
ExploitThird Party Advisory
Source: cverecord
https://note-hxlab.wetolink.com/share/8QmDZCddHvyR

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-434CWE-284

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