CVE-2026-104246 Details
Description
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.
A path traversal vulnerability has been identified in the Contact Form 7 Signature Addon WordPress plugin, affecting versions through 4.2.2. The vulnerability arises because the plugin does not properly sanitize the signature field value before creating an email attachment path. This oversight allows unauthenticated users to attach arbitrary files, limited to the wp-content directory of the current Contact Form 7 installation, to a form's outgoing email. If the form is set to send a copy to a submitter-controlled email address, the attacker can access the targeted file.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 17, 2026CISA-ADP
Assessed Oct 18, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/e56dc60b-9232-43f2-8d57-fe9452c85281/ | [email protected] | AdvisoryExploitPartial Content |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-22 | Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| Contact Form 7 Signature Addon | <= 4.2.2 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 18, 2026 | CVE Modified | CISA-ADP |
| Oct 17, 2026 | New CVE Received | [email protected] |