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    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. 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.

    Published:Jan 27, 2023
    Last Modified:Apr 8, 2026
    EPS:Jan 27, 2023
    EPSS Score:0.01645
    CVSS Score:9.8

    Affected Products

    Vendor
    Contentstudio
    Product
    Contentstudio

    Exploits

    https://plugins.trac.wordpress.org/browser/contentstudio/tags/1.2.1/contentstudio-plugin.php#L517https://plugins.trac.wordpress.org/browser/contentstudio/tags/1.2.1/contentstudio-plugin.php#L517

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

    CVE-2025-67910 (CVSS 9.1) — Unrestricted Upload of File with Dangerous Type vulnerability in contentstudio Contentstudio contentstudio all…
    CVE-2025-12181 (CVSS 8.8) — The ContentStudio plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type valida…
    CVE-2025-13144 (CVSS 4.3) — The ContentStudio plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and …
    CVE-2025-47692 (CVSS 4.3) — Missing Authorization vulnerability in contentstudio Contentstudio contentstudio allows Exploiting Incorrectly…
    CVE-2023-0558 (CVSS 8.2) — The ContentStudio plugin for WordPress is vulnerable to authorization bypass due to an unsecure token check th…
    CVE-2023-0557 (CVSS 7.5) — The ContentStudio plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High