How severe is CVE-2023-0558?

CVE-2023-0558 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2023-0558 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0558?

CVE-2023-0558 affects Contentstudio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-0558?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2023-0558 published?

CVE-2023-0558 was published on 2023-01-27 and last updated on 2026-06-17.

CVE-2023-0558

CVE-2023-0558 is a high-severity vulnerability in Contentstudio with a CVSS 3.x base score of 8.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: High (CVSS 3.x base score 8.2)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Contentstudio
Published: 2023-01-27
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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, 1.2.5. This makes it possible for unauthenticated attackers to execute functions intended for use by users with proper API keys.
How severe is CVE-2023-0558?: CVE-2023-0558 has a CVSS 3.x base score of 8.2, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2023-0558 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0558?: CVE-2023-0558 affects Contentstudio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-0558?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2023-0558 published?: CVE-2023-0558 was published on 2023-01-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:contentstudio:contentstudio:*:*:*:*:*:wordpress:*:*

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