CVE-2026-73379
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk12th percentile - higher than 12% of all known CVEs
Summary
The Contact Form by Supsystic plugin version earlier than 1.10.0 has a bypass vulnerability that does not require authentication. This means an unauthenticated attacker can bypass security mechanisms and gain unauthorized access.
Risk Assessment
The risk is that an attacker can bypass security and access functions or data, potentially leading to confidentiality and integrity breaches.
Recommendation
It is recommended to update the plugin to version 1.10.0 or later, which includes a fix for this vulnerability.
Other vulnerabilities in Contact Form by Supsystic
See all- CVE-2026-83625High
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.
- CVE-2026-73378High
Unauthenticated Cross Site Scripting (XSS) vulnerability in Contact Form by Supsystic versions prior to 1.10.0.
Original NVD description (English source)
Unauthenticated Bypass Vulnerability in Contact Form by Supsystic < 1.10.0 versions.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS