Medium severity · published Mar 13, 2026
CVE-2026-22209
wpDiscuz before 7.6.47 - Cross-Site Scripting via Unescaped Custom CSS in Style Tag
5.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WP
wpDiscuz · gVectors
before 7.6.47 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-22209
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-22209
wordpress.org
https://wordpress.org/plugins/wpdiscuz/
wordpress.org
https://wordpress.org/plugins/wpdiscuz/#developers
www.vulncheck.com
https://www.vulncheck.com/advisories/wpdiscuz-before-cross-site-scripting-via-unescaped-custom-css-in-style-tag
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