CVE-2021-26032: [20210501] - Core - Adding HTML to the executable block list of MediaHelper::canUpload
First published: Tue May 25 2021(Updated: )
An issue was discovered in Joomla! 3.0.0 through 3.9.26. HTML was missing in the executable block list of MediaHelper::canUpload, leading to XSS attack vectors.
Credit: security@joomla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Joomla Joomla\! | >=3.0.0<=3.9.26 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-26032?
CVE-2021-26032 is a vulnerability discovered in Joomla! 3.0.0 through 3.9.26 that allows for XSS attack vectors due to missing HTML in the executable block list of MediaHelper::canUpload.
How severe is CVE-2021-26032?
CVE-2021-26032 has a severity rating of 6.1 (medium).
How does CVE-2021-26032 affect Joomla!?
CVE-2021-26032 affects Joomla! versions 3.0.0 through 3.9.26.
How can the XSS attack vectors be exploited?
The XSS attack vectors in CVE-2021-26032 can be exploited by injecting malicious code into the executable block list of MediaHelper::canUpload.
Is there a fix available for CVE-2021-26032?
Yes, a fix for CVE-2021-26032 is available. It is recommended to update Joomla! to a version that includes the fix.
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- version/joomla joomla\!/3.0.0
- version/joomla joomla\!/3.9.26