CVE-2026-21632mediumCWE-79

CVE-2026-21632: medium-severity vulnerability in Joomla! CMS

Joomla! Core - [20260304] - XSS vectors in various article title outputs

Published · Updated

Follow this CVE+ Monitor Joomla! CMS

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.9epss 0.2%
Lack of output escaping for article titles leads to XSS vectors in various locations.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U
Affected products
Joomla! Project · Joomla! CMS
Related CVEs — Joomla! CMS

In the same product, most dangerous first.

CVE-2023-23752MEDIUM[20230201] - Core - Improper access check in webservice endpointsEPSS 99.8%KEVCVE-2021-26030—[20210401] - Core - Escape xss in logo parameter error pagesEPSS 82.8%CVE-2021-23124—[20210102] - Core - XSS in mod_breadcrumbs aria-label attributeEPSS 79.0%CVE-2024-21726MEDIUM[20240205] - Core - Inadequate content filtering within the filter codeEPSS 48.8%CVE-2020-35613—[20201104] - Core - SQL injection in com_users list viewEPSS 28.9%CVE-2024-21725MEDIUM[20240204] - Core - XSS in mail address outputsEPSS 26.8%