CVE-2020-36727 CRITICAL

CVE-2020-36727: Newsletter Manager <= 1.5.1 - Insecure Deserialization

Vendor F1Logic
Product Newsletter Manager
Weakness CWE-502 · Unsafe deserialization
Published June 7, 2023
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

The Newsletter Manager plugin for WordPress is vulnerable to insecure deserialization in versions up to, and including, 1.5.1. This is due to unsanitized input from the 'customFieldsDetails' parameter being passed through a deserialization function. This potentially makes it possible for unauthenticated attackers to inject a serialized PHP object.

Key dates

02Disclosure timeline

June 7, 2023 CVE published
April 8, 2026 Record updated