CVE-2023-2877
Published: 27 June 2023
Summary
CVE-2023-2877 is a high-severity an unspecified weakness vulnerability in Strategy11 Formidable Forms. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 1.3% 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 Formidable Forms WordPress plugin before version 6.3.1 contains an authorization and input-validation flaw in its add-on installation functionality. The component fails to properly check user permissions or restrict the plugin URL supplied to the installation routine, allowing actions that should be limited to higher-privileged administrators.
A subscriber-level account on the affected WordPress site can therefore supply an arbitrary plugin slug and version from the WordPress.org repository, causing the plugin to be downloaded, installed, and activated. Successful exploitation yields remote code execution because the attacker-chosen plugin can contain executable PHP code that runs with the privileges of the web server.
The published references indicate that the issue is resolved by updating Formidable Forms to 6.3.1 or later. The EPSS score for this CVE has remained at its observed peak of 0.7001 since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-34325
Vulnerability details
The Formidable Forms WordPress plugin before 6.3.1 does not adequately authorize the user or validate the plugin URL in its functionality for installing add-ons. This allows a user with a role as low as Subscriber to install and activate arbitrary…
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plugins of arbitrary versions from the WordPress.org plugin repository onto the site, leading to Remote Code Execution.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.