CVE-2026-21623

9.4 criticalEPSS 0.2%

Critical (9.4) in stackideas easydiscuss. EPSS 0.2% chance of exploitation in the next 30 days.

Lack of input filterung leads to a persistent XSS vulnerability in the forum post handling of the Easy Discuss component for Joomla.

Severity

9.4 critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

5.4 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-01-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19