CVE-2025-53283Network attack vector

Unauthenticated web-shell upload via missing file validation

Published Nov 6, 2025 · Updated Nov 6, 2025

Unrestricted file upload in Drop Uploader for CF7 2.4.1 and earlier allows remote attackers to place web shells on the server. The plugin's upload handler accepts attacker-controlled files without validating their type, allowing server-side content to enter web storage. The upload path requires neither authentication nor user interaction; if the stored file is web-reachable and executable, it runs attacker code in the web server context.

CVSS severity10.0
Critical
EPSS probability0.43%
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 Drop Uploader for CF7 2.4.1 and earlier allows remote attackers to place web shells on the server. The plugin's upload handler accepts attacker-controlled files without validating their type, allowing server-side content to enter web storage. The upload path requires neither authentication nor user interaction; if the stored file is web-reachable and executable, it runs attacker code in the web server context.

The record

CVE
CVE-2025-53283
Published
Nov 6, 2025
Updated
Nov 6, 2025
Vendor
Borisolhor Studio
Product
Drop Uploader for CF7 - Drag&Drop File Uploader Addon
Classifications
CWE-434, CAPEC-650, T1505.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 6, 2025Record 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=n/a <=<= 2.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Borisolhor Studio · Drop Uploader for CF7 - Drag&Drop File Uploader Addonversion=n/a <=<= 2.4.1

Published CVSS scores

10.0PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-650Upload a Web Shell to a Web Server
T1505.003Web Shell

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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