CVE-2023-0558

Name: CVE-2023-0558
Creator: NVD / NIST
Published: 2023-01-27T22:15:09.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.88%

Last modified Jun 17, 2026

CVE-2023-0558 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.88% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.88%

54.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-639

Affected Software

Vendor	Product	Versions
Contentstudio	Contentstudio	< 1.2.6

References

https://plugins.trac.wordpress.org/browser/contentstudio/trunk/contentstudio-plugin.php#L416Exploit, Release Notes, Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/c31828dc-ef94-4895-8395-a5d52a0a82bd?source=cveThird Party Advisory
https://plugins.trac.wordpress.org/browser/contentstudio/trunk/contentstudio-plugin.php#L416Exploit, Release Notes, Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/c31828dc-ef94-4895-8395-a5d52a0a82bd?source=cveThird Party Advisory

Timeline

Published: Jan 27, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-0558?

How severe is CVE-2023-0558?

CVE-2023-0558 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.88% probability of exploitation in the next 30 days.

How do I fix CVE-2023-0558?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-0558?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST