What is CVE-2026-22209?

CVE-2026-22209 is a medium-severity vulnerability in Gvectors Wpdiscuz, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2026-03-13.

How severe is CVE-2026-22209?

Medium severity. CVSS v3 base score is 5.5 out of 10.

XSS in Gvectors Wpdiscuz

CVE-2026-22209

wpDiscuz before 7.6.47 contains a cross-site scripting vulnerability in the customCss field that allows administrators to inject malicious scripts by breaking out of style tags. Attackers with admin access can inject payloads like </style>…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (1.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N.

Affected products

Gvectors Wpdiscuz — versions 0, 7.6.47

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wpDiscuz Changelog (patch)
wpDiscuz (product)
www.vulncheck.com/advisories/wpdiscuz-before-cross-site-scripting-via-unescaped… (third-party-advisory)

Frequently asked questions

What is CVE-2026-22209?: CVE-2026-22209 is a medium-severity vulnerability in Gvectors Wpdiscuz, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2026-03-13.
How severe is CVE-2026-22209?: Medium severity. CVSS v3 base score is 5.5 out of 10.