CVE-2024-21731

[20240703] - Core - XSS in StringHelper::truncate method

MEDIUM
6.1
CVSS Score
Published: July 9, 2024 at 04:15 PM UTC
Updated: June 17, 2026 at 07:10 AM UTC
1 product affected across 1 vendorJoomla!

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Severity
MEDIUM6.1
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

Improper handling of input could lead to an XSS vector in the StringHelper::truncate method.

Affected

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

3.0.0 ≤ v ≤ 3.10.154.0.0 ≤ v ≤ 4.4.55.0.0 ≤ v ≤ 5.1.13.0.0-3.10.154.0.0-4.4.55.0.0-5.1.1

Remediation

No guide yet

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.1MEDIUMCISA-ADP
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

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