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.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Unknown Newsletters unaffected
Version Status Constraints
0 affected < 4.16

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Project Subscriptions

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Advisories

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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/ cve-icon
History

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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

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

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

Link: CVE-2026-16267

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-08-08T07:30:17Z

Weaknesses