Reported vulnerability
Apocalypse Meow 21.1.3 - 21.2.7 - Authentication Bypass
Published 3 Dec 2017
Updated 22 Jan 2024
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
critical · CVSS 9.8The Apocalypse Meow plugin for WordPress is vulnerable to Authentication Bypass in versions 21.1.3 - 21.2.7. This is due to improper validation via bcrypt. This makes it possible for unauthenticated attackers to bypass the authentication check.
Severity vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Apocalypse Meow
- Software
- plugin · apocalypse-meow
- Affected versions
- From 21.1.3, through 21.2.7
- Fix availability
- Fix available
- Fixed versions
- 21.2.8
Recommended action
Update to version 21.2.8, or a newer patched version
Further references (1)
Data sources and licences
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.
Read licence termsSource: Wordfence
Need help fixing this issue?
Get help checking your site, applying an available update and resolving any problems after updating.
Get help with this issueQuestions about this vulnerability
Which versions of Apocalypse Meow are affected?
Wordfence lists these affected versions: From 21.1.3, through 21.2.7. Use the version checker above to compare your installed release with this report.
Is a fix available for Apocalypse Meow?
Wordfence reports a fix for this issue in Apocalypse Meow. It lists these fixed versions: 21.2.8. 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.
Other reports for the same product
These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.