CVE-2026-21631
Joomla! Core - [20260303] - XSS vector in com_associations comparison view
EPSS 0.00%
Description
Lack of output escaping leads to a XSS vector in the multilingual associations component.
How to fix CVE-2026-21631
To remediate CVE-2026-21631, upgrade the affected package to a fixed version below.
- Bitnami/joomla—upgrade to 5.4.4 or later
Is CVE-2026-21631 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 3.0.0, < 5.4.4, >= 6.0.0, < 6.0.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |