CVE-2023-3076
Published: 10 July 2023
Summary
CVE-2023-3076 is a critical-severity Missing Authorization (CWE-862) vulnerability in Inspireui Mstore Api. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 3.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
The MStore API WordPress plugin before version 3.9.9 contains a missing authorization flaw (CWE-862) in its wholesale REST API endpoint. The endpoint fails to restrict role assignment when creating accounts, allowing visitors to specify any role, but the issue is only reachable on sites that have purchased and enabled the plugin's pro features.
Unauthenticated attackers can send crafted requests to the endpoint and provision accounts with arbitrary privileges, including administrator-level access. Successful exploitation grants full control over site content, user data, and configuration, consistent with the CVSS 9.8 rating that reflects network-exploitable impact without authentication or user interaction.
WPScan entries for the vulnerability identify the affected plugin versions and note that the issue is resolved in 3.9.9. The associated EPSS score has remained flat at its peak value of 0.3039 with no material upward trajectory after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-43767
Vulnerability details
The MStore API WordPress plugin before 3.9.9 does not prevent visitors from creating user accounts with the role of their choice via their wholesale REST API endpoint. This is only exploitable if the site owner paid to access the plugin's…
more
pro features.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
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.
Requiring an access control policy ensures authorization checks are defined and applied for critical functions.
Reviews of access controls detect missing authorization checks on critical functions or resources.
Documenting permitted unauthenticated actions prevents missing authorization by making all exceptions explicit and subject to organizational review.
Requiring attribute association with information prevents authorization from being performed without necessary security or privacy context.
Mandating authorization prior to allowing remote connections addresses missing authorization for remote access.
Mandating authorization before wireless connections are allowed prevents missing authorization for wireless access.
The control requires authorization before allowing mobile device connections, directly mitigating missing authorization for system access.
Requiring approvals for account creation and specifying authorizations ensures authorization is not missing for system access.