What is CVE-2025-63083?

CVE-2025-63083 is a medium-severity vulnerability in Joomla Joomla\!, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-01-06.

How severe is CVE-2025-63083?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Joomla Joomla\!

CVE-2025-63083

Lack of output escaping leads to a XSS vector in the pagebreak plugin.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (7.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Joomla Joomla\!
Joomla! Project Cms — versions 3.9.0-5.4.1, 6.0.0-6.0.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2025-63083?: CVE-2025-63083 is a medium-severity vulnerability in Joomla Joomla\!, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-01-06.
How severe is CVE-2025-63083?: Medium severity. CVSS v3 base score is 6.1 out of 10.