Answer in brief
CVE-2026-104246 records a Unknown severity vulnerability in Contact Form 7 Signature Addon <= 4.2.2 - Unauthenticated Arbitrary File Read via Path Traversal in Email Attachments. The current sources do not mark it as known exploited. The current feed maps Unknown/Contact Form 7 Signature Addon (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Unknown/Contact Form 7 Signature Addon (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/Contact Form 7 Signature Addongeneric | >=0 <=4.2.2 | Not reported |
Published upstream
Oct 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.