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Vulnerability DatabaseCVE-2026-86813

CVE-2026-86813: 
WordPress vulnerability analysis and mitigation

The MetForm WordPress plugin before 4.1.9 does not properly neutralize newline characters in user-submitted values that are placed into notification email headers, allowing unauthenticated attackers to inject additional email headers, such as Bcc, into the emails the site sends when a submitted field value is configured to populate a header.

Source: NVD

Related WordPress vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-15439MEDIUM6.5
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