CVE-2020-8421

6.1 mediumEPSS 1.0%

Medium (6.1) in joomla joomla\!. EPSS 1.0% chance of exploitation in the next 30 days.

An issue was discovered in Joomla! before 3.9.15. Inadequate escaping of usernames allows XSS attacks in com_actionlogs.

Severity

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2020-01-28
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19