Login Request a demo
Medium severity · published Jan 27, 2023
CVE-2023-0556
The ContentStudio plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on several functions in versions up to, and including, 1.2.5
6.5
CVSS
1%
EPSS
No
On KEV
Description
The ContentStudio plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on several functions in versions up to, and including, 1.2.5. This makes it possible for unauthenticated attackers to obtain the blog metadata (via the function cstu_get_metadata) that includes the plugin's contentstudio_token. Knowing this token allows for other interactions with the plugin such as creating posts in versions prior to 1.2.5, which added other requirements to posting and updating.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Contentstudio · Contentstudio
before 1.2.6 · source: NVD
Affected product
CO
Contentstudio
Contentstudio
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-0556
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-0556
Exploit
https://plugins.trac.wordpress.org/browser/contentstudio/tags/1.2.1/contentstudio-plugin.php#L517
Patch
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2851006%40contentstudio%2Ftrunk&old=2844028%40contentstudio%2Ftrunk&sfp_email=&sfph_mail=
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/52db8d41-859a-4d68-8b83-3d3af8f1bf64?source=cve
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/52db8d41-859a-4d68-8b83-3d3af8f1bf64
More from Contentstudio
9.8
CVE-2023-0558
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,…
9.1
CVE-2025-67910
WordPress Contentstudio plugin <= 1.3.7 - Arbitrary File Upload vulnerability
8.8
CVE-2025-12181
ContentStudio <= 1.3.7 - Authenticated (Author+) Arbitrary File Upload
5.3
CVE-2025-49990
WordPress ContentStudio plugin <= 1.3.7 - Broken Access Control vulnerability
5.3
CVE-2023-0557
The ContentStudio plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 1.2.5