CVE-2026-16269mediumCWE-287

CVE-2026-16269: medium-severity vulnerability in Newsletters

Newsletters < 4.16 - Unauthenticated API Authentication Bypass via Type Juggling

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33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 4.8epss 0.4%
The Newsletters WordPress plugin before 4.16 does not strictly compare its API authentication key, allowing unauthenticated attackers to bypass the API authentication via type juggling and perform privileged actions such as modifying subscriber records and sending emails, when the optional API has been enabled.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Affected products
Unknown · Newsletters
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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