CVE-2021-23124

[20210102] - Core - XSS in mod_breadcrumbs aria-label attribute

MEDIUM
6.1
CVSS Score
Published: January 12, 2021 at 08:19 PM UTC
Updated: June 17, 2026 at 03:38 AM UTC
1 product affected across 1 vendorJoomla!

Using Joomla! CMS by Joomla! Project?

Get instant alerts when new vulnerabilities affect Joomla! CMS - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.1
Exploit prediction
EPSS 79%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

3.9.0 ≤ v ≤ 3.9.233.9.0-3.9.23

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card