CVE-2021-23129

[20210303] - Core - XSS within alert messages showed to users

Description

An issue was discovered in Joomla! 2.5.0 through 3.9.24. Missing filtering of messages showed to users that could lead to xss issues.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.26% Top 20%
Vendor Advisory joomla.org
Affected: Joomla! Project Joomla! CMS
Published at:
Updated at:

References

Link Tags
https://developer.joomla.org/security-centre/843-20210303-core-xss-within-alert-messages-showed-to-users.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-23129?
CVE-2021-23129 has been scored as a medium severity vulnerability.
How to fix CVE-2021-23129?
To fix CVE-2021-23129, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-23129 being actively exploited in the wild?
It is possible that CVE-2021-23129 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-23129?
CVE-2021-23129 affects Joomla! Project Joomla! CMS.
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