CVE-2026-22209

MEDIUM 5.5

wpDiscuz before 7.6.47 - Cross-Site Scripting via Unescaped Custom CSS in Style Tag

CVSS Score

5.5

EPSS Score

0.1%

EPSS Percentile

16th

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.

CWE	CWE-79
Vendor	gvectors
Product	wpdiscuz
Published	Mar 13, 2026
Last Updated	Mar 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Scope

Changed

Confidentiality

Integrity

Availability

Affected Versions

gVectors / wpDiscuz

0 < 7.6.47

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordpress.org: https://wordpress.org/plugins/wpdiscuz/#developers wordpress.org: https://wordpress.org/plugins/wpdiscuz/ vulncheck.com: https://www.vulncheck.com/advisories/wpdiscuz-before-cross-site-scripting-via-unescaped-custom-css-in-style-tag

Credits

Scott Moore - VulnCheck