Medium

Under Construction, Coming Soon & Maintenance Mode <= 1.1.1 - Server Side Request Forgery

  • Disclosed: 27.02.2021
  • Updated: 11.10.2026 10:22

The Under Construction, Coming Soon & Maintenance Mode plugin for WordPress is vulnerable to Server Side Request Forgery (SSRF) in versions up to, and including,1.1.1. This is due to the 'apiKey' POST parameter being improperly sanitized. This makes it possible for unauthenticated attackers to execute arbitrary scripting in other users' browsers, leading to the disclosure of sensitive data or subsequent attacks.

Affected software

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PlatformPackageVulnerable versionsFixed in
WordPress plugin Under Construction, Coming Soon & Maintenance Mode <= 1.1.1 1.1.2

References

CVSS score 6.1/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE)
CWE-918
Platform
WordPress
Package
Under Construction, Coming Soon & Maintenance Mode
Disclosed
27.02.2021
Updated
11.10.2026 10:22

Sources and licenses

Wordfence Intelligence - 5f6b88fb-1070-427b-a51f-23fbede3dd59 - Wordfence Intelligence

Copyright 2012-2026 Defiant Inc.

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/
Wordfence Intelligence
Wordfence Intelligence - Defiant, Inc.
Copyright Defiant, Inc. All rights reserved except as granted below.
License grant, section 3.1 of the Wordfence Intelligence Terms and Conditions (January 26, 2026):

Subject to this Agreement, Company hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute the Service. Any copy you make for such purposes is authorized provided that you reproduce Company’s copyright designation, this license, and the license of any disclosed Company licensor in any such copy.

Full applicable Agreement: https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/

Vulnerability history: Under Construction, Coming Soon & Maintenance Mode

All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
3
First → latest
02.2021 04.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 1
  • Medium 2

Disclosures per year

  1. 2021: 2
  2. 2022: 0
  3. 2023: 0
  4. 2024: 0
  5. 2025: 0
  6. 2026: 1
  1. High · 7.2 86c1b729-e8fe-46e8-8d57-c6312087c6b2 < 1.1.2 1.1.2
  2. Under Construction, Coming Soon & Maintenance Mode <= 1.1.1 - Server Side Request Forgery this entry
    Medium · 6.1 5f6b88fb-1070-427b-a51f-23fbede3dd59 <= 1.1.1 1.1.2

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