Security readout for executives and security teams
Plain-English summary
CVE-2023-0558 is an authorization bypass in the WordPress ContentStudio plugin. On affected sites, an unauthenticated attacker could pass a weak token check and access functions meant only for valid API-key users. The main business concern is unauthorized access to sensitive plugin-connected data or actions.
Executive priority
Treat this as a high-priority WordPress plugin exposure for any public site using ContentStudio. Prioritize inventory and removal or update decisions, especially where the plugin connects to sensitive publishing or marketing accounts.
Technical view
ContentStudio up to and including 1.2.5 is described as vulnerable because an insecure token check is susceptible to PHP type juggling. The CVSS 3.1 score is 8.2, with network attack vector, no privileges, no user interaction, high confidentiality impact, and low integrity impact.
Likely exposure
Exposure appears limited to WordPress sites running the ContentStudio plugin at versions up to and including 1.2.5. The bundled affected metadata is inconsistent, so validate against installed plugin version and vendor advisories.
Exploitation context
The source bundle does not cite CISA KEV listing or active exploitation. The CVSS vector indicates low-complexity remote exploitation without authentication or user interaction, which raises urgency for internet-facing WordPress sites.
Researcher notes
The public description supports authorization bypass through type juggling in a token check. The affected CPE/version metadata in the bundle is sparse and internally inconsistent, so do not rely on it alone for scoping.
Mitigation direction
- Inventory WordPress sites for the ContentStudio plugin and installed version.
- Check vendor, WordPress plugin, and Wordfence guidance for a fixed release or removal advice.
- Disable or remove affected plugin versions if no supported fixed version is available.
- Review logs for suspicious unauthenticated access to ContentStudio plugin endpoints.
- Assess whether plugin-connected API keys or accounts need rotation after suspected abuse.
Validation and detection
- Confirm whether ContentStudio is installed and enabled on each WordPress site.
- Record the plugin version and flag versions up to and including 1.2.5.
- Review web logs for unusual requests involving ContentStudio plugin paths.
- Verify any vendor-recommended update, disablement, or removal was completed.
- Confirm no unexpected content, settings, or integrations changed after the exposure window.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-639: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-0558 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N3.94.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.2HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Authorization Bypass Through User-Controlled Key
Authorization Bypass Through User-Controlled Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.