An issue was discovered in Joomla! 3.9.0 through 3.9.23. The lack of escaping in mod_breadcrumbs aria-label attribute allows XSS attacks.
https://developer.joomla.org/security-centre/837-20210102-core-xss-in-mod-breadcrumbs-aria-label-attribute.html
Source: Mitre, NVD
Published: 2021-01-12
Updated: 2021-01-19
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N