CVE-2021-26037 [20210703] - Core - Lack of enforced session termination
Attackers can maintain access via active sessions after password changes or user blocking due to missing session termination in Joomla.
- 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-2021-26037?
CVE-2021-26037 is a medium-severity vulnerability in Joomla Joomla\!, published on 7 Jul 2021. 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! 2.5.0 through 3.9.27. CMS functions did not properly termine existing user sessions when a user's password was changed or the user was blocked.
Weakness: CWE-613
Which versions are affected by CVE-2021-26037?
1 open source package ship an affected version, including joomla. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
joomla Bitnami | From 2.5.0 to 3.9.27 | None |
Products include Joomla Joomla\!.
How do I fix CVE-2021-26037?
No fix has been published for CVE-2021-26037 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-26037 being exploited?
There is no known exploitation of CVE-2021-26037 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-2021-26037, GHSA-2qqv-xp5x-f5wf.