Reported vulnerability

Really Simple Security (Free, Pro, and Pro Multisite) 9.0.0 - 9.1.1.1 - Authentication Bypass

Published 14 Nov 2024

Updated 15 Nov 2024

CVE-2024-10924

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.

Really Simple Security Pro multisite (plugin)

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

Wordfence advisory

critical · CVSS 9.8

The Really Simple Security (Free, Pro, and Pro Multisite) plugins for WordPress are vulnerable to authentication bypass in versions 9.0.0 to 9.1.1.1. This is due to improper user check error handling in the two-factor REST API actions with the 'check_login_and_get_user' function. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, when the "Two-Factor Authentication" setting is enabled (disabled by default).

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

Really Simple Security Pro multisite

Software
plugin · really-simple-ssl-pro-multisite
Affected versions
From 9.0.0, through 9.1.1.1
Fix availability
Fix available
Fixed versions
9.1.2

Recommended action

Update to version 9.1.2, or a newer patched version

Really Simple Security – Simple and Performant Security (formerly Really Simple SSL)

Software
plugin · really-simple-ssl
Affected versions
From 9.0.0, through 9.1.1.1
Fix availability
Fix available
Fixed versions
9.1.2

Recommended action

Update to version 9.1.2, or a newer patched version

Really Simple Security Pro

Software
plugin · really-simple-ssl-pro
Affected versions
From 9.0.0, through 9.1.1.1
Fix availability
Fix available
Fixed versions
9.1.2

Recommended action

Update to version 9.1.2, or a newer patched version

Further references (1)
Data sources and licences

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Copyright 1999-2026 The MITRE Corporation

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

How do I check which product and version this report affects?

This report covers more than one product. Choose your plugin, theme or WordPress core in the version checker, then enter its installed version. Each product has its own affected ranges and fix details in the report above.

Which update should I install?

Find your exact product in the report and read its fixed versions and recommended action. Fix details for one product do not apply to every product covered by this advisory. Follow the linked source when no fixed version is specified.

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.

Does a version outside these ranges mean my website is secure?

A version outside the reported ranges is not listed as affected by this particular issue. Other vulnerabilities, missing information or a previous compromise still need separate checks. Review other reports for your product and keep your website maintained.

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.

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