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

Critical 9.8 Published Updated

Unauthenticated attackers can inject serialized PHP objects via the customFieldsDetails parameter, potentially leading to code execution.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-36727?

CVE-2020-36727 is a critical unsafe deserialization vulnerability in f1logic Newsletter Manager, published on 7 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-502

Which versions are affected by CVE-2020-36727?

It affects 1 product.

Products include Xyzscripts Newsletter Manager.

How do I fix CVE-2020-36727?

No fix has been published for CVE-2020-36727 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2020-36727 being exploited?

There is no known exploitation of CVE-2020-36727 in the wild and no public exploit code.

Sources

Also known as GHSA-xj95-mhv8-mh4r.

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