CVE-2022-0424
Published: 09 May 2022
Summary
CVE-2022-0424 is a medium-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Supsystic Popup. Its CVSS base score is 5.3 (Medium).
Operationally, ranked in the top 2.5% 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 Popup by Supsystic WordPress plugin before version 1.10.9 is affected by a missing authentication vulnerability (CWE-306) in an AJAX action. The flaw permits any caller to invoke the endpoint without credentials or authorization checks, resulting in disclosure of email addresses belonging to users who have subscribed to popups. It received a CVSS 3.1 score of 5.3 reflecting network attack vector, low complexity, and no required privileges or user interaction, with impact limited to confidentiality.
Unauthenticated remote attackers can exploit the issue simply by sending a crafted request to the exposed AJAX handler. Successful exploitation yields the list of subscriber email addresses stored by the plugin, enabling further reconnaissance or targeted phishing without any other access to the WordPress site.
The referenced WPScan advisory identifies the affected plugin versions and confirms that the vulnerability is resolved in 1.10.9 and later releases, indicating that administrators should apply the vendor update to eliminate the unauthenticated endpoint.
The associated EPSS score stands at 0.4197, indicating moderate and stable exploitation probability since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-15566
Vulnerability details
The Popup by Supsystic WordPress plugin before 1.10.9 does not have any authentication and authorisation in an AJAX action, allowing unauthenticated attackers to call it and get the email addresses of subscribed users
- 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.