CVE-2020-36727CWE-502

Newsletter Manager <= 1.5.1 - Insecure Deserialization

Critical · published June 7, 2023

CVSS v3.1
9.8
EPSS
2%
Percentile
75.8
In the wild
Unconfirmed
What it is

🚨 An unauthenticated attacker could exploit the WordPress Newsletter Manager plugin, injecting malicious objects with ease! 🔥 Watch out for versions up to 1.5.1! Think of it like a restaurant where anyone can change the menu items without approval — if unsanitized input is allowed, a mischievous diner could add something nasty to the menu! It’s a recipe for disaster! This vulnerability could allow attackers to inject harmful serialized PHP objects, giving them full control over your website without needing a user account. The potential consequences? Data theft, malicious code execution, or even complete takeover of your site. It’s absolutely devastating!

Put simply

Think of it like a restaurant where anyone can change the menu items without approval — if unsanitized input is allowed, a mischievous diner could add something nasty to the menu! It’s a recipe for disaster! The vulnerability lies in the insecure deserialization of unsanitized input from the 'customFieldsDetails' parameter in the Newsletter Manager plugin, allowing attackers to craft a serialized PHP object that can exploit your system.

What to do

This vulnerability could allow attackers to inject harmful serialized PHP objects, giving them full control over your website without needing a user account. The potential consequences? Data theft, malicious code execution, or even complete takeover of your site. It’s absolutely devastating! To protect yourself, immediately update the Newsletter Manager plugin to version 1.5.2 or later. Also, review your input sanitization practices to ensure all user inputs are validated. Stay vigilant! You've got this! Staying proactive with your security will keep your site safe and sound! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01615 · 75.8th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2023-06-07T01:51Z
EPSS history
Timeline
  • 07 JUN 01:51Z
    Newsletter Manager <= 1.5.1 - Insecure Deserialization
    cvelistv5