Description

Unauthenticated Privilege Escalation in miniorange otp verification <= 5.5.1 versions.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.8",
  "pubDate": "2026-08-13T14:17:02.957Z",
  "pubdate": "2026-08-13T14:17:02.957Z",
  "executiveSummary": "An unauthenticated privilege escalation vulnerability has been identified in the miniOrange OTP Verification plugin for versions up to and including 5.5.1. This security flaw enables remote, unauthenticated attackers to bypass standard access controls and elevate their privileges within the targeted WordPress environment. The vulnerability impacts the core authorization and verification logic of the affected product, posing severe risk implications such as unauthorized administrative access, data compromise, and potential full system takeover. Exploitation of this vulnerability requires network access to the vulnerable WordPress instance but does not necessitate any prior authentication or special user privileges. The attack vector relies on interacting with poorly secured verification routines or endpoints exposed by the plugin, allowing malicious actors to forge or manipulate state parameters and successfully impersonate privileged roles. Remediation requires immediate intervention by administrators, primarily focusing on updating the plugin beyond the vulnerable threshold or applying vendor-supplied patches as soon as they become available.",
  "technicalDetails": "The vulnerability resides within the miniOrange OTP Verification plugin (versions <= 5.5.1), specifically affecting the mechanisms responsible for handling one-time password verification and subsequent privilege assignment or session initialization. The root cause stems from insufficient authentication checks, flawed access control enforcement, and improper validation of user session states during the OTP verification workflow. Specifically, the vulnerable component fails to adequately verify whether the entity initiating the verification request possesses the necessary authorization context or valid session tokens associated with the target account or privilege level. Attack flow begins with an unauthenticated attacker sending crafted HTTP requests directly to the endpoints or AJAX actions managed by the plugin. Because the underlying PHP functions lack strict capability checks (such as current_user_can() validations) and fail to cryptographically bind the OTP verification process to a legitimate user session or registration flow, an attacker can manipulate input parameters. By supplying arbitrary user identifiers or bypassing the initial OTP challenge-response sequence entirely through manipulated requests, the attacker forces the application logic to assume successful validation has occurred. Consequently, the plugin incorrectly grants elevated privileges or initializes an authenticated session with administrative or high-level capabilities. The network exposure is public-facing, as these endpoints are typically accessible over HTTP/HTTPS without requiring valid credentials. Post-exploitation impact includes unauthorized account takeover, arbitrary user creation with elevated roles, execution of administrative functionalities, and potential remote code execution depending on the subsequent capabilities granted to the compromised administrative context. The vulnerability requires no pre-existing privileges, making it a critical vector for automated exploitation and systemic compromise of the host application."
}