Stored Cross-Site Scripting Vulnerability in SEOPress Plugin for WordPress
CVE-2026-116535

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Seopress – Ai Seo Plugin & On-site Seo
Vendor
CVE Published:
31 October 2026

What is CVE-2026-116535?

The SEOPress - AI SEO Plugin for WordPress is susceptible to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping for the 'display_name' parameter. This vulnerability allows authenticated users, with subscriber-level access and above, to inject malicious scripts into web pages. By manipulating their display name to include the '%%archive_title%%' token accompanied by HTML event-handler payloads, attackers can execute arbitrary scripts when other users visit affected pages, as the plugin fails to properly filter HTML content.

Affected Version(s)

SEOPress – AI SEO Plugin & On-site SEO 0 <= 10.3

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/wp-seopress/ta...
https://plugins.trac.wordpress.org/browser/wp-seopress/ta...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yuto Hyakumoto
.