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CVE-2026-16267highCWE-502

Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field

41Vexday Risk Score

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

ssvc Attendcvss 8.1epss 0.3%
exploitation probability
0.3%top 81% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
The Newsletters WordPress plugin before 4.16 does not restrict the classes allowed when unserialising a value taken from a public form submission, allowing unauthenticated attackers to inject arbitrary PHP objects.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Unknown · Newsletters
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