Vulnerability · Published Jan 16, 2026 · Assigned by Joomla
CVE-2026-21623Extension - stackideas.com - Persistent XSS in EasyDiscuss component 1.0.0-5.0.15 for Joomla
Critical 9.4
In plain English
A critical-severity cross-site scripting in EasyDiscuss extension for Joomla from Stackideas.com. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS 4.0)9.4Critical
Exploit odds (30 days)0.2%top 90.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Lack of input filterung leads to a persistent XSS vulnerability in the forum post handling of the Easy Discuss component for Joomla.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Stackideas.com | EasyDiscuss extension for Joomla | 1.0.0-5.0.15 |
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