CVE-2020-36727

CRITICAL

Newsletter Manager <1.5.1 - Open Redirect

Title source: llm

Description

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.

References (3)

[Exploit] https://blog.nintechnet.com/insecure-deserialization-vulnerability-in-wordpress-newsletter-manager-plugin-unpatched/

[Third Party Advisory] https://wpscan.com/vulnerability/b82124b1-e5e1-4f1e-9513-90474fd3f066

[Third Party Advisory] https://www.wordfence.com/threat-intel/vulnerabilities/id/dcfd8c4d-d48b-468d-a7d5-1ec05b068f79?source=cve

Scores

CVSS v3 9.8

EPSS 0.0096

EPSS Percentile 76.2%

Attack Vector NETWORK

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

Classification

CWE

CWE-502

Status published

Affected Products (1)

xyzscripts/newsletter_manager < 1.5.1

Timeline

Published Jun 07, 2023

Tracked Since Feb 18, 2026