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CVE-2026-16269mediumCWE-287

Newsletters < 4.16 - Unauthenticated API Authentication Bypass via Type Juggling

33Vexday Risk Score

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

ssvc Attendcvss 4.8epss 0.2%
exploitation probability
0.2%top 86% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.