CVE-2025-34100Public exploitNetwork attack vector

Unauthenticated PHP code execution via unrestricted upload

Published Jul 10, 2025 · Updated Apr 7, 2026

Unrestricted file upload in BuilderEngine CMS 3.5.0 allows remote attackers to execute arbitrary PHP code through an exposed upload endpoint. The jQuery File Upload handler at /themes/dashboard/assets/plugins/jquery-file-upload/server/php/ accepts files[] content without restricting dangerous types and stores it under /files/. No authentication is required, and requesting the uploaded PHP file executes it with the web server process's privileges.

CVSS severity9.3
Critical
EPSS probability3.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in BuilderEngine CMS 3.5.0 allows remote attackers to execute arbitrary PHP code through an exposed upload endpoint. The jQuery File Upload handler at /themes/dashboard/assets/plugins/jquery-file-upload/server/php/ accepts files[] content without restricting dangerous types and stores it under /files/. No authentication is required, and requesting the uploaded PHP file executes it with the web server process's privileges.

The record

CVE
CVE-2025-34100
Published
Jul 10, 2025
Updated
Apr 7, 2026
Vendor
BuilderEngine
Product
BuilderEngine CMS
Classifications
CWE-434, CWE-306, CWE-20, CAPEC-23, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

BuilderEngine · BuilderEngine CMSversion=3.5.0

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-306Missing Authentication for Critical Function
CWE-20Improper Input Validation
CAPEC-23File Content Injection
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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