SQL Injection in Joomla Joomla\!

CVE-2026-21630

Improperly built order clauses lead to a SQL injection vulnerability in the articles webservice endpoint.

Vulnerability class: SQL Injection

EPSS: 0.003 (26.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Joomla Joomla\!
Joomla! Project Cms — versions 4.0.0-5.4.3, 6.0.0-6.0.3

Weakness classification (CWE)

CWE-89 — SQL Injection

References

security@joomla.org (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-21630?: CVE-2026-21630 is a high-severity vulnerability in Joomla Joomla\!, classified under SQL Injection. CVSS score: 8.8/10. Published 2026-04-01.
How severe is CVE-2026-21630?: High severity. CVSS v3 base score is 8.8 out of 10.