Newsletters <= 4.14 - Unauthenticated PHP Object Injection
| CVE | CVE-2026-12583 |
|---|---|
| CVSS | 8.1 (High) |
| Publicly Published | June 23, 2026 |
| Last Updated | July 29, 2026 |
| Researcher |
Yaswanth Reddy Sunkara
|
Description
The Newsletters plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 4.14 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
References
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Vulnerability Details for Newsletters
| Software Type | Plugin |
|---|---|
| Software Slug | newsletters-lite (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 4.15, or a newer patched version |
| Affected Version |
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| Patched Version |
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