CVE-2022-0888
Published: 23 March 2022
Summary
CVE-2022-0888 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Ninjaforms Ninja Forms File Uploads. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 7.1% 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 Ninja Forms - File Uploads Extension WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation in the ~/includes/ajax/controllers/uploads.php file. This flaw affects versions up to and including 3.3.0 and is tracked under CWE-434, with a CVSS 3.1 score of 9.8.
Unauthenticated attackers can exploit the issue over the network to upload malicious files that enable remote code execution, achieving full confidentiality, integrity, and availability impact without requiring user interaction or credentials. The EPSS score has remained flat at a peak of 0.0930 since disclosure.
Advisories from sources such as Wordfence reference the vulnerability details and point to the need for remediation through plugin updates, consistent with standard practices for resolving file upload flaws in WordPress extensions. No evidence of widespread real-world exploitation is indicated in the provided data.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-15924
Vulnerability details
The Ninja Forms - File Uploads Extension WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/includes/ajax/controllers/uploads.php file which can be bypassed making it possible for unauthenticated attackers to upload malicious…
more
files that can be used to obtain remote code execution, in versions up to and including 3.3.0
- 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 identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.