CVE-2026-21623

—

CVSS 4.0

9.4 critical

EPSS

<1%p8

Published

Jan 16, 2026 (Jan 16, 2026)

Modified

Jun 17, 2026

Description

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

Vendors: stackideas
Products: easydiscuss
Ecosystems: Joomla
Weakness: CWE-79
Vector: 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/E:X/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

NVD CVE.org GitHub PoCs EPSS (0.2%)

In the news0 stories

No ingested article mentions this CVE yet.