CVE-2022-0140
Published: 12 April 2022
Summary
CVE-2022-0140 is a medium-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Vfbpro Visual Form Builder. Its CVSS base score is 5.3 (Medium).
Operationally, ranked in the top 6.0% 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 Visual Form Builder WordPress plugin before version 3.0.6 is affected by a missing authentication vulnerability (CWE-306) that exposes the form entry export functionality. The component fails to enforce access controls on the vfb-export endpoint, enabling any remote caller to retrieve stored form submissions without credentials. The issue carries a CVSS 3.1 score of 5.3 and results in partial confidentiality impact through unauthorized disclosure of entry data.
Unauthenticated attackers can directly invoke the endpoint to view form entries or download them as CSV files. Because the flaw requires no privileges or user interaction and is exploitable over the network, any internet-facing site running an affected version can be queried for sensitive submission contents that may include personal or business information.
Public advisories from WPScan and FortiGuard document the missing authorization check and identify the patched release as 3.0.6. Site operators are therefore advised to update the plugin to close the exposure.
The associated EPSS score has remained flat at 0.1219 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-15353
Vulnerability details
The Visual Form Builder WordPress plugin before 3.0.6 does not perform access control on entry form export, allowing unauthenticated users to see the form entries or export it as a CSV File using the vfb-export endpoint.
- 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.
Requires established identification and authentication to unlock, mitigating missing authentication for continued system access.
Requiring identification and rationale for actions allowed without authentication ensures critical functions are not left unprotected by forcing review of authentication requirements.
Authorizing mobile device connections to organizational systems ensures authentication is performed for this critical access function.
Guarantees critical functions are protected by mandatory invocation of the access control mechanism.
Auditing sessions makes it possible to detect access to critical functions without required authentication.
The assessment process confirms authentication is present and effective for critical functions, preventing exploitation from missing authentication.
Certification assesses that critical functions have required authentication controls in place.
Disabling non-essential functions and services eliminates the need to secure them, reducing exposure from missing authentication on unnecessary components.