Cyber Resilience

CVE-2023-0558

HighPublic PoC

Published: 27 January 2023

Published
27 January 2023
Modified
08 April 2026
KEV Added
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Patch
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CVSS Score v3.1 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
EPSS Score 0.0157 81.9th percentile
Risk Priority 17 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-0558 is a high-severity Authorization Bypass Through User-Controlled Key (CWE-639) vulnerability in Contentstudio Contentstudio. Its CVSS base score is 8.2 (High).

Operationally, ranked in the top 18.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

EU & UK References

Vulnerability details

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…

more

for use by users with proper API keys.

CWE(s)
CWE-639NVD-CWE-noinfo

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

contentstudio
contentstudio
≤ 1.2.6

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-24 Access Control Decisions
addresses: CWE-639

Per-request decision making makes it harder to bypass authorization using user-controlled keys without proper validation in the decision process.

AC-3 Access Enforcement
addresses: CWE-639

Consistent enforcement of approved authorizations makes bypassing via user-controlled keys ineffective.

References