CVE-2020-8421

Description

An issue was discovered in Joomla! before 3.9.15. Inadequate escaping of usernames allows XSS attacks in com_actionlogs.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.26% Top 25%
Vendor Advisory joomla.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://developer.joomla.org/security-centre/800-20200103-core-xss-in-com-actionlogs vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-8421?
CVE-2020-8421 has been scored as a medium severity vulnerability.
How to fix CVE-2020-8421?
To fix CVE-2020-8421, 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-2020-8421 being actively exploited in the wild?
It is possible that CVE-2020-8421 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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