What is CVE-2020-8420?

CVE-2020-8420 is a high-severity vulnerability in Joomla Joomla\!, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2020-01-28.

How severe is CVE-2020-8420?

High severity. CVSS v3 base score is 8.8 out of 10.

CSRF in Joomla Joomla\!

CVE-2020-8420

An issue was discovered in Joomla! before 3.9.15. A missing CSRF token check in the LESS compiler of com_templates causes a CSRF vulnerability.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.008 (54.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Joomla Joomla\!
N/a — versions n/a

Weakness classification (CWE)

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

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2020-8420?: CVE-2020-8420 is a high-severity vulnerability in Joomla Joomla\!, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2020-01-28.
How severe is CVE-2020-8420?: High severity. CVSS v3 base score is 8.8 out of 10.