CVE Catalog

CVE-2026-104246

MediumCVSS 5.9
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.28%

19th percentile - higher than 19% of all known CVEs

Summary

The Contact Form 7 Signature Addon WordPress plugin through 4.2.2 does not sanitize a signature field value before building an email attachment path from it, allowing unauthenticated users to attach arbitrary files (bounded to wp-content on current Contact Form 7) to a form's outgoing email via path traversal; when a form is configured to email a copy to a submitter-controlled address, the attacker can read the targeted file.

Risk Assessment

An attacker can read sensitive files from the wp-content directory, potentially leading to data leakage, including configuration information and other sensitive content.

Recommendation

Update the Contact Form 7 Signature Addon plugin to a version later than 4.2.2.

Related vulnerabilities

Original NVD description (English source)

The Contact Form 7 Signature Addon WordPress plugin through 4.2.2 does not sanitize a signature field value before building an email attachment path from it, allowing unauthenticated users to attach arbitrary files (bounded to wp-content on current Contact Form 7) to a form's outgoing email via path traversal; when a form is configured to email a copy to a submitter-controlled address, the attacker can read the targeted file.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS