CVE-2024-21726
Published: 29 February 2024
Summary
CVE-2024-21726 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Joomla Joomla\!. Its CVSS base score is 6.5 (Medium).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 46.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-19342
Vulnerability details
Inadequate content filtering leads to XSS vulnerabilities in various components.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
XSS vulnerability in Joomla CMS due to inadequate content filtering and PHP mbstring inconsistency enables exploitation of public-facing web applications to inject and execute arbitrary JavaScript in an authenticated administrator's browser context, facilitating session hijacking and remote code execution.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.