CVE-2026-22209 | THREATINT

Description

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.

PUBLISHED Reserved 2026-01-06 | Published 2026-03-13 | Updated 2026-03-13 | Assigner VulnCheck

MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

MEDIUM: 5.5CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status

unaffected

Any version before 7.6.47

affected

7.6.47

unaffected

Credits

Scott Moore - VulnCheck finder

References

wordpress.org/plugins/wpdiscuz/ (wpDiscuz Changelog) patch

wordpress.org/plugins/wpdiscuz/ (wpDiscuz) product

www.vulncheck.com/...g-via-unescaped-custom-css-in-style-tag (VulnCheck Advisory: wpDiscuz before 7.6.47 - Cross-Site Scripting via Unescaped Custom CSS in Style Tag) third-party-advisory

cve.org (CVE-2026-22209)

nvd.nist.gov (CVE-2026-22209)

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