CVE-2026-16267 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00157.

Key SSVC decision points have not yet been added.

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OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://wpscan.com/vulnerability/b51c11d6-5bfa-4b2c-b348-cda19889deee/

History

Thu, 13 Aug 2026 10:30:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-545

Tue, 11 Aug 2026 20:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-502
Metrics		cvssV3_1 `{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Sat, 08 Aug 2026 07:45:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-545

Sat, 08 Aug 2026 06:30:00 +0000

Type	Values Removed	Values Added
Description		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.
Title		Newsletters < 4.16 - Unauthenticated PHP Object Injection via Date Form Field
References		https://wpscan.com/vulnerability/b51c11d6-5bfa-4b2c-b348-cda19889deee/

Projects

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MITRE

Status: PUBLISHED

Assigner: WPScan

Published: 2026-08-08T06:00:10.538Z

Updated: 2026-08-11T19:32:29.821Z

Reserved: 2026-07-20T09:09:37.520Z

Link: CVE-2026-16267

Vulnrichment

Updated: 2026-08-11T19:32:14.524Z

NVD

Status : Received

Published: 2026-08-08T07:17:09.667

Modified: 2026-08-11T20:17:27.263

Link: CVE-2026-16267

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-13T11:45:03Z

Weaknesses

CWE-545

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