CVE-2025-4126 – WordPress EG-Series Plugin Stored Cross-Site Scripting Vulnerability

CVE ID : CVE-2025-4126

Published : May 15, 2025, 4:16 a.m. | 1 hour, 25 minutes ago

Description : The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin’s [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the shortcode_title function. This makes it possible for authenticated attackers – with contributor-level access and above, on sites with the Classic Editor plugin activated – to inject arbitrary JavaScript code in the titletag attribute that will execute whenever a user access an injected page.

Severity: 6.4 | MEDIUM

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