What is CVE-2026-35220?

CVE-2026-35220 is a medium-severity vulnerability in Joomla Joomla\!, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-05-26.

How severe is CVE-2026-35220?

Medium severity. CVSS v3 base score is 4.3 out of 10.

CSRF in Joomla Joomla\!

CVE-2026-35220

Lack of CSRF token validation lead to a CSRF attack vector in the admin activation endpoint of com_users.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2026-05-26 · last modified 2026-07-20.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.001 (2.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 2.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Joomla Joomla\!
Joomla! Project Cms — versions 6.0.0-6.1.0

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

developer.joomla.org/security-centre/1037-20260505-core-csrf-in-user-activation… (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-35220?: CVE-2026-35220 is a medium-severity vulnerability in Joomla Joomla\!, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-05-26.
How severe is CVE-2026-35220?: Medium severity. CVSS v3 base score is 4.3 out of 10.