CVE-2026-21623

MEDIUM
2026-01-16 [email protected]
5.4
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 16, 2026 - 15:15 nvd
MEDIUM 5.4

Tags

Joomla XSS Easydiscuss

Description

Lack of input filterung leads to a persistent XSS vulnerability in the forum post handling of the Easy Discuss component for Joomla.

Analysis

Stored cross-site scripting in Joomla's Easy Discuss component allows authenticated users to inject malicious scripts into forum posts due to insufficient input validation. An attacker with login credentials can execute arbitrary JavaScript in the browsers of other users viewing affected posts, potentially leading to session hijacking or credential theft. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

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Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +27
POC: 0

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CVE-2026-21623 vulnerability details – vuln.today
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