{"id":"CVE-2021-23124","aliases":["BIT-joomla-2021-23124","EUVD-2021-10242","GHSA-mhvc-g5wh-hrxg"],"status":"published","title":"[20210102] - Core - XSS in mod_breadcrumbs aria-label attribute","description":"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.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.7896,"percentile":0.99598,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-01-12T20:19:49Z","modified":"2026-10-24T10:30:23Z","affected":[{"source":"osv","ecosystem":"Bitnami","package":"joomla","ranges":[{"type":"SEMVER","events":[{"introduced":"3.9.0"},{"last_affected":"3.9.23"}]}]}],"products":[{"vendor":"joomla","product":"joomla\\!"},{"vendor":"joomla! project","product":"joomla! cms"}],"references":[{"url":"https://developer.joomla.org/security-centre/837-20210102-core-xss-in-mod-breadcrumbs-aria-label-attribute.html","tags":["x_refsource_MISC","vendor-advisory","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23124","tags":["web"]},{"url":"https://github.com/advisories/GHSA-mhvc-g5wh-hrxg"}],"sources":{"cve":[{"id":"CVE-2021-23124","title":"[20210102] - Core - XSS in mod_breadcrumbs aria-label attribute","description":"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.","status":"published","published":"2021-01-12T20:19:49.48Z","modified":"2026-02-25T05:04:36.94Z","updated_at":"2026-11-02T14:33:00.819444Z"}],"euvd":[{"id":"EUVD-2021-10242","description":"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.","status":"published","published":"2021-01-12T20:19:49Z","modified":"2026-02-25T05:04:36Z","updated_at":"2026-11-02T19:48:29.551855Z"}],"ghsa":[{"id":"GHSA-mhvc-g5wh-hrxg","title":"An issue was discovered in Joomla! 3.9.0 through 3.9.23. The lack of escaping in mod_breadcrumbs...","description":"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.","status":"published","published":"2022-05-24T17:38:55Z","modified":"2023-01-29T05:05:02Z","cwes":["CWE-79"],"updated_at":"2026-11-02T14:45:41.669563Z"}],"nvd":[{"id":"CVE-2021-23124","description":"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.","status":"published","published":"2021-01-12T21:15:18.947Z","modified":"2026-06-17T03:38:18.5Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:49.284888Z"}],"osv":[{"id":"CVE-2021-23124","description":"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.","status":"published","published":"2021-01-12T21:15:18.947Z","modified":"2026-10-24T10:30:23.623159314Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:18.367807Z"},{"id":"BIT-joomla-2021-23124","title":"[20210102] - Core - XSS in mod_breadcrumbs aria-label attribute","description":"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.","status":"published","published":"2025-04-03T14:11:58.394Z","modified":"2026-09-08T08:48:01.392197318Z","updated_at":"2026-11-02T15:28:31.782692Z"}]}}