CVE-2026-16267

HighCVSS 8.1/10Last modified Aug 26, 2026

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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-502

Affected software

No affected versions have been published.

Timeline

Published
Aug 8, 2026
Last modified
Aug 26, 2026
NVD status
Deferred

Related CVEs from 2026

CVE-2026-162688.2The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce-processing request before fetching a user-supplied UCVE-2026-162694.8The Newsletters WordPress plugin before 4.16 does not strictly compare its API authentication key, allowing unauthenticated attackers to bypCVE-2026-16278.1An attacker may exploit the use of outdated and weak MAC algorithms in the device’s SSH service to potentially compromise the integrity of tCVE-2026-162706.9Open Mercato does not validate regex rules. An attacker with privileges to create the regex rule can add an unsafe regex to a field. When soCVE-2026-162729.1Use of less trusted source vulnerability in PayTR Payment and Electronic Money Institution Inc. PayTR Virtual Pos iFrame API WHMCS Module alCVE-2026-162734.6The Narrative Publisher WordPress plugin through 1.0.7 does not restrict write access to a REST-exposed post meta field or escape it when reCVE-2026-162742.7The Classified Listing WordPress plugin before 5.4.4 does not perform a capability or ownership check on an AJAX action that returns a postCVE-2026-162755.3GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.4 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 thCVE-2026-162762.7The Classified Listing WordPress plugin before 5.4.4 does not perform a capability check on an AJAX action that returns aggregated store reCVE-2026-162776.5A stack-based buffer overflow was found in rpcbind's rpcinfo utility. When querying a remote rpcbind service with `rpcinfo -l`, address infoCVE-2026-162799.3An Improper Authorization vulnerability affecting 3DPassport in 3DSwymer from Release 3DEXPERIENCE R2023x through Release 3DEXPERIENCE R2026CVE-2026-16284.6Mattermost Desktop App versions <=5.13.3 fail to attach listeners restricting navigation to external sites within the Mattermost app which a
CVE-2026-16267: High severity, CVSS 8.1 | Vulnix