What is CVE-2026-21624?

CVE-2026-21624 is a medium-severity vulnerability in Stackideas Easydiscuss, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-16.

How severe is CVE-2026-21624?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Stackideas Easydiscuss

CVE-2026-21624

Lack of input filterung leads to a persistent XSS vulnerability in the user avatar text handling of the Easy Discuss component for Joomla.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-01-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (8.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Stackideas Easydiscuss
Stackideas.com Easydiscuss Extension For Joomla — versions 1.0.0-5.0.15

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

stackideas.com/easydiscuss (product, Third Party Advisory)

Frequently asked questions

What is CVE-2026-21624?: CVE-2026-21624 is a medium-severity vulnerability in Stackideas Easydiscuss, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-01-16.
How severe is CVE-2026-21624?: Medium severity. CVSS v3 base score is 5.4 out of 10.