CVE-2025-4370Network attack vector

Unauthenticated TXT upload via unchecked asset storage

Published Jul 29, 2025 · Updated Apr 8, 2026

Missing authorization in ThemeFuse Brizy - Page Builder 2.6.20 and earlier allows remote attackers to upload TXT files to the server. The process_external_asset_urls function lacks authorization, and store_file writes files without validating their destination paths. No account or user interaction is required, but accepted content is limited to TXT files and the documented impact is unauthorized server-side file creation.

CVSS severity5.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in ThemeFuse Brizy - Page Builder 2.6.20 and earlier allows remote attackers to upload TXT files to the server. The process_external_asset_urls function lacks authorization, and store_file writes files without validating their destination paths. No account or user interaction is required, but accepted content is limited to TXT files and the documented impact is unauthorized server-side file creation.

The record

CVE
CVE-2025-4370
Published
Jul 29, 2025
Updated
Apr 8, 2026
Vendor
ThemeFuse
Product
Brizy - Page Builder
Classifications
CWE-862, T1105
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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=0 <=2.6.20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

ThemeFuse · Brizy - Page Builderversion=0 <=2.6.20

Published CVSS scores

5.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A: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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1105Ingress Tool Transfer

Public exploit references

No public exploit references are available in this record.

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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