Reported vulnerability

WP Maintenance Mode & Site Under Construction < 1.8.2 - Missing Authorization to Arbitrary Plugin Installation/Activation

Q: Which versions of WP Maintenance Mode & Site Under Construction are affected?

Wordfence lists these affected versions: Start version unspecified, before 1.8.2. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for WP Maintenance Mode & Site Under Construction?

Wordfence reports a fix for this issue in WP Maintenance Mode & Site Under Construction. It lists these fixed versions: 1.8.2. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 22 Apr 2021

Updated 22 Jan 2024

CVE-2021-24191

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

high · CVSS 8.8

Low privileged users can use the AJAX action 'cp_plugins_do_button_job_later_callback' in the WP Maintenance Mode & Site Under Construction WordPress plugin before 1.8.2, to install any plugin (including a specific version) from the WordPress repository, as well as activate arbitrary plugin from then blog, which helps attackers install vulnerable plugins and could lead to more critical vulnerabilities like RCE.

Severity vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

WP Maintenance Mode & Site Under Construction

Software: plugin · wp-maintenance-mode-site-under-construction
Affected versions: Start version unspecified, before 1.8.2
Fix availability: Fix available
Fixed versions: 1.8.2

Recommended action

Update to version 1.8.2, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/808e5246-30b1-4706-b11f-27fb74b117ed?source=api-prod

Data sources and licences

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CVE Usage: MITRE 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 Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of WP Maintenance Mode & Site Under Construction are affected?

Wordfence lists these affected versions: Start version unspecified, before 1.8.2. Use the version checker above to compare your installed release with this report.

Is a fix available for WP Maintenance Mode & Site Under Construction?

Wordfence reports a fix for this issue in WP Maintenance Mode & Site Under Construction. It lists these fixed versions: 1.8.2. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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