CVE-2020-35614 [20201105] - Core - User Enumeration in backend login
Attackers can enumerate valid usernames via the backend login page, facilitating targeted attacks against Joomla CMS installations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-35614?
CVE-2020-35614 is a medium-severity vulnerability in Joomla Joomla\!, published on 28 Dec 2020. 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! 3.9.0 through 3.9.22. Improper handling of the username leads to a user enumeration attack vector in the backend login page.
Which versions are affected by CVE-2020-35614?
1 open source package ship an affected version, including joomla. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
joomla Bitnami | From 3.9.0 to 3.9.22 | None |
Products include Joomla Joomla\!.
How do I fix CVE-2020-35614?
No fix has been published for CVE-2020-35614 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-35614 being exploited?
There is no known exploitation of CVE-2020-35614 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-2020-35614, GHSA-hqcf-3xgv-jcpv.