CVE-2023-23755 [20230502] - Core - Bruteforce prevention within the mfa screen
Attackers can bypass multi-factor authentication via brute force due to missing rate limiting, potentially taking over user accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-23755?
CVE-2023-23755 is a high-severity vulnerability in Joomla Joomla\!, published on 30 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Joomla! 4.2.0 through 4.3.1. The lack of rate limiting allowed brute force attacks against MFA methods.
Weakness: CWE-307
Which versions are affected by CVE-2023-23755?
1 open source package ship an affected version, including joomla. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
joomla Bitnami | From 4.2.0 | 4.3.2 |
Products include Joomla Joomla\!.
How do I fix CVE-2023-23755?
Upgrade joomla to 4.3.2 or later.
Is CVE-2023-23755 being exploited?
There is no known exploitation of CVE-2023-23755 in the wild and no public exploit code.
Other vulnerabilities in Joomla Joomla\!
- CVE-2016-10033 PHPMailer Command Injection
- CVE-2023-23752 Joomla! Improper Access Control
- CVE-2026-48902 Joomla! Core - [20260518] - Transport encryption downgrade for password and username reset links
- CVE-2025-25226 [20250401] - Joomla Framework - SQL injection vulnerability in quoteNameStr method of Database package
- CVE-2022-23795 [20220303] - Core - User row are not bound to a authentication mechanism
Sources
Also known as BIT-joomla-2023-23755, GHSA-6v7h-6fvv-974m.