How severe is CVE-2023-0557?

CVE-2023-0557 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2023-0557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-0557?

CVE-2023-0557 affects Contentstudio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-0557?

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-2023-0557 published?

CVE-2023-0557 was published on 2023-01-27 and last updated on 2026-06-17.

CVE-2023-0557

CVE-2023-0557 is a high-severity vulnerability in Contentstudio with a CVSS 3.x base score of 7.5. 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-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Contentstudio
Published: 2023-01-27
Last modified: 2026-06-17

Description

The ContentStudio plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 1.2.5. This could allow unauthenticated attackers to obtain a nonce needed for the creation of posts.

Frequently asked questions

What is CVE-2023-0557?: The ContentStudio plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 1.2.5. This could allow unauthenticated attackers to obtain a nonce needed for the creation of posts.
How severe is CVE-2023-0557?: CVE-2023-0557 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2023-0557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-0557?: CVE-2023-0557 affects Contentstudio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-0557?: 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-2023-0557 published?: CVE-2023-0557 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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