CVE-2026-12583
HIGHNewsletters < 4.15 - Unauthenticated PHP Object Injection via Subscriber Custom Field
Title source: cnaDescription
The Newsletters WordPress plugin before 4.15 does not prevent deserialization of untrusted input that is stored through a public form, allowing unauthenticated attackers to inject a PHP object and, via a property-oriented gadget chain bundled with the Newsletters WordPress plugin before 4.15, write arbitrary files and execute code on the server.
References (1)
Core 1
Core References
Exploit exploit
vdb-entry
technical-description
https://wpscan.com/vulnerability/e4c44105-f43d-4dff-8487-7d8ae2691c4e/
Scores
CVSS v3
8.1
EPSS
0.0033
EPSS Percentile
25.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-502
Status
published
Products (1)
None/Newsletters
< 4.15
Published
Jul 14, 2026
Tracked Since
Jul 14, 2026