CVE-2020-8421

medium

Description

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

References

https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-29288

https://developer.joomla.org/security-centre/800-20200103-core-xss-in-com-actionlogs

Details

Source: Mitre, NVD

Published: 2020-01-28

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

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

Severity: Medium

EPSS

EPSS: 0.0081