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.
Published: 2026-08-08
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

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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

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

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

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

Link: CVE-2026-16267

cve-icon Vulnrichment

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

cve-icon NVD

Status : Received

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

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

Link: CVE-2026-16267

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses