PT-2021-15379 · Joomla · Joomla!

Šarūnas Paulauskas · Published 2021-01-12 · Updated 2025-04-03 · CVE-2021-23124

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Joomla! versions 3.9.0 through 3.9.23

Description The issue is related to a lack of escaping in the aria-label attribute of the mod breadcrumbs module, which allows XSS attacks.

Recommendations For Joomla! versions 3.9.0 through 3.9.23, update to a version that includes the fix for this issue to prevent XSS attacks.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BIT-JOOMLA-2021-23124

CVE-2021-23124

Affected Products

Joomla!

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2021-23124 · Security Note
• https://osv.dev/vulnerability/CVE-2021-23124 · Vendor Advisory
• https://developer.joomla.org/security-centre/837-20210102-core-xss-in-mod-breadcrumbs-aria-label-attribute.html · Vendor Advisory
• https://osv.dev/vulnerability/BIT-joomla-2021-23124 · Vendor Advisory
• https://t.me/cibsecurity/22057 · Telegram Post
• https://t.me/cvenotify/8697 · Telegram Post