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><script>alert(1)</script> in the custom CSS setting to execute arbitrary JavaScript in user browsers.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (12.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.9% 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
- Gvectors Wpdiscuz — versions 0, 7.6.47
Weakness classification (CWE)
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.