CVE-2021-26030

[20210401] - Core - Escape xss in logo parameter error pages

Description

An issue was discovered in Joomla! 3.0.0 through 3.9.25. Inadequate escaping allowed XSS attacks using the logo parameter of the default templates on error page

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 46.05% Top 5%
Vendor Advisory joomla.org
Affected: Joomla! Project Joomla! CMS
Published at:
Updated at:

References

Link Tags
https://developer.joomla.org/security-centre/850-20210401-core-escape-xss-in-logo-parameter-error-pages.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-26030?
CVE-2021-26030 has been scored as a medium severity vulnerability.
How to fix CVE-2021-26030?
To fix CVE-2021-26030, 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-2021-26030 being actively exploited in the wild?
It is possible that CVE-2021-26030 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~46% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-26030?
CVE-2021-26030 affects Joomla! Project Joomla! CMS.
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