CVE-2023-0558

ContentStudio <= 1.2.5 - Authorization Bypass

8.2 High

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: Low
Availability: None

Exploit likelihood

0.88%Down 0.1 points since Jan 28, 2023

What each source reports

CVE List Score used 8.2

ContentStudio <= 1.2.5 - Authorization Bypass

Record: CVE-2023-0558
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness: CWE-639
Updated: 2026-11-02

EUVDEUVD-2023-12603 8.2

Record: EUVD-2023-12603
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-42mm-238w-2fxw 9.8

The ContentStudio plugin for WordPress is vulnerable to authorization bypass due to an unsecure...

Record: GHSA-42mm-238w-2fxw
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-639
Updated: 2026-11-02

NVD 8.2

Record: CVE-2023-0558
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-639
Updated: 2026-11-02

Affected products

contentstudio

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-0558 is a high vulnerability (CVSS 8.2) in Contentstudio, published January 27, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.88%, the 59th percentile. No source names a fixed version.