CVE-2023-0558 ContentStudio <= 1.2.5 - Authorization Bypass

Q: What is CVE-2023-0558?

CVE-2023-0558 is a high-severity authentication bypass vulnerability in ContentStudio, published on 27 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Q: Is CVE-2023-0558 being exploited?

There is no known exploitation of CVE-2023-0558 in the wild and no public exploit code.

Q: How do I fix CVE-2023-0558?

No fix has been published for CVE-2023-0558 yet. Limit exposure of the affected software until one is available.

High 8.2 Published 27 Jan 2023 Updated 8 Apr 2026

Unauthenticated attackers can bypass authorization checks via type juggling to execute privileged functions in the ContentStudio WordPress plugin.

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-2023-0558?

CVE-2023-0558 is a high-severity authentication bypass vulnerability in ContentStudio, published on 27 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The ContentStudio plugin for WordPress is vulnerable to authorization bypass due to an unsecure token check that is susceptible to type juggling in versions up to, and including, 1.2.5. This makes it possible for unauthenticated attackers to execute functions intended for use by users with proper API keys.

Weakness: CWE-639

Which versions are affected by CVE-2023-0558?

It affects 1 product.

Products include Contentstudio Contentstudio.

How do I fix CVE-2023-0558?

No fix has been published for CVE-2023-0558 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-0558 being exploited?

There is no known exploitation of CVE-2023-0558 in the wild and no public exploit code.

Sources

Also known as GHSA-42mm-238w-2fxw.