CVE Watch5 sept 2026

CVE-2026-83625

The Contact Form by Supsystic plugin for WordPress is vulnerable to Stored Cross-Site Scripting via IP Address Header in all versions up to,

CVSS

7.2

Alto

EPSS

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KEV

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Exploit Today

0-100

Publicado: 5 sept 2026 · Última mod.: 5 sept 2026 · CWE-79

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

The Contact Form by Supsystic plugin for WordPress is vulnerable to Stored Cross-Site Scripting via IP Address Header in all versions up to, and including, 1.10.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. An unauthenticated attacker can first call the 'updateNonce' action — which is accessible without authentication due to its absence from the plugin's permission list — to obtain a valid nonce, then submit a contact form with a malicious payload in a spoofed IP header such as X-Forwarded-For.

Referencias oficiales

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