{"id":"CVE-2021-23124","details":"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.","aliases":["BIT-joomla-2021-23124"],"modified":"2026-07-09T00:22:38.868163Z","published":"2021-01-12T21:15:18.947Z","references":[{"type":"ADVISORY","url":"https://developer.joomla.org/security-centre/837-20210102-core-xss-in-mod-breadcrumbs-aria-label-attribute.html"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/joomla/joomla-cms","events":[{"introduced":"a2b9beda71c3603b0f0da0ab70bb30cd976ec123"},{"last_affected":"435d780d9a87504267256033c5f6fb984f713ff9"}],"database_specific":{"extracted_events":[{"introduced":"3.9.0"},{"last_affected":"3.9.23"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*"}}],"versions":["3.9.20-rc","3.9.23","3.9.23-rc2","3.9.23-rc","3.9.19","3.9.22","3.9.22-rc","3.9.21","3.9.21-rc","3.9.20","3.9.19-rc","3.9.17-rc","3.9.18","3.9.17","3.9.16","3.9.15","3.9.15-rc","3.9.16-rc","3.9.14","3.9.14-rc","3.9.13","3.9.12","3.9.13-rc2","3.9.13-rc","3.9.12-rc","3.9.11","3.9.10","3.9.8","3.9.11-rc","3.9.9","3.9.6","3.9.5","3.9.9-rc","3.9.4","3.9.3","3.9.7","3.9.7-rc","3.9.2-rc","3.9.1","3.9.6-rc2","3.9.6-rc","3.9.0","3.9.5-rc","3.9.4-rc","3.9.3-rc","3.9.2","3.9.1-rc"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23124.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}