PT-2026-89840 · Undefined · Undefined

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CVE-2026-86813

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Published

2026-09-11

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Updated

2026-09-11

CVSS v3.1

4.8

Medium

VectorAV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
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.

Exploit

Fix

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Related Identifiers

CVE-2026-86813

Affected Products

Undefined