CVE-2023-0556

Public Exploit

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.

9.8

CVSS

Severity: Critical

CVSS 3.1 •

EPSS 0.32%

Third-Party Advisory wordpress.org Third-Party Advisory wordpress.org Third-Party Advisory wordfence.com

Affected: contentstudio ContentStudio

References

Link	Tags
https://www.wordfence.com/threat-intel/vulnerabilities/id/52db8d41-859a-4d68-8b83-3d3af8f1bf64	third party advisory
https://plugins.trac.wordpress.org/browser/contentstudio/tags/1.2.1/contentstudio-plugin.php#L517	third party advisory exploit
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2851006%40contentstudio%2Ftrunk&old=2844028%40contentstudio%2Ftrunk&sfp_email=&sfph_mail=	third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2023-0556?: CVE-2023-0556 has been scored as a critical severity vulnerability.
How to fix CVE-2023-0556?: To fix CVE-2023-0556, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-0556 being actively exploited in the wild?: It is possible that CVE-2023-0556 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-0556?: CVE-2023-0556 affects contentstudio ContentStudio.

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