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miniOrange OTP Verification EUVDEUVD-2026-32177

| CVE-2026-42731 CRITICAL
Incorrect Privilege Assignment (CWE-266)
2026-05-27 audit@patchstack.com GHSA-57c7-rcv3-9v8r
9.8
CVSS 3.1 · Vendor: patchstack
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Identify WordPress site running miniOrange OTP Verification ≤5.4.9
  2. Delivery
    Send crafted request to OTP verification endpoint
  3. Exploit
    Abuse incorrect privilege assignment (CWE-266)
  4. Execution
    Obtain elevated WordPress privileges
  5. Impact
    Take administrative control of site

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2025 - Insecure Design
ASVS 5.0
V8 - Authorization Privilege assignment review
Exploitation Conditions

Per the CVSS vector (AV:N/AC:L/PR:N/UI:N), exploitation requires only network access to a WordPress site that has the miniOrange OTP Verification plugin installed and active at version 5.4.9 or earlier, with no authentication and no user interaction needed. The limiting factor is therefore deployment-specific rather than configuration-specific: the site must be running the vulnerable plugin version in an active state. The input description does not name a specific feature toggle or non-default setting as a precondition, so the constraint is presence of the affected plugin version; sites not running this plugin, or running a fixed release above 5.4.9, are not exposed.

Impact

The CVSS 3.1 base score is 9.8 (Critical) with vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, signaling network-exploitable, low-complexity, unauthenticated, no-interaction attack with high impact across all three dimensions - the strongest possible signal short of scope change. However, corroborating exploitation signals are absent: no EPSS score was provided, the CVE is not in CISA KEV, no POC was referenced, and no SSVC decision data was supplied, so real-world exploitation likelihood cannot be quantified from this dataset. This means the score reflects worst-case potential rather than confirmed active risk; for WordPress plugin privilege-escalation flaws reported by Patchstack the practical risk is typically meaningful because such plugins are widely deployed and internet-facing, but the lack of EPSS/KEV/POC means defenders should treat the 9.8 as a strong prioritization trigger to patch rather than as evidence of ongoing mass exploitation. No conflicting signals were detected between the vector and the description - both point to remote, unauthenticated privilege escalation.

Exploit ScenarioDerived

A remote attacker sends crafted requests to the OTP verification flow exposed by a vulnerable WordPress site, abusing the incorrect privilege assignment to obtain elevated capabilities (potentially administrator-level) without supplying valid credentials or requiring any victim interaction. Because the CVSS vector is AV:N/AC:L/PR:N/UI:N, this requires only network access to the site and low attack complexity. No public exploit was referenced in the available data.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
No patch listed yet 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – May 27, 2026

Privilege escalation in the miniOrange OTP Verification WordPress plugin (all versions up to and including 5.4.9) lets remote unauthenticated attackers gain elevated privileges due to incorrect privilege assignment (CWE-266). With a CVSS 9.8 vector indicating network reach, no authentication, and no user interaction, a successful attack can fully compromise the confidentiality, integrity, and availability of the affected WordPress site. No public exploit identified at time of analysis, and the issue is not listed in CISA KEV.

RemediationAI

No vendor-released patch version is identified in the provided data; the input only establishes that versions through 5.4.9 are vulnerable, so administrators should consult the Patchstack advisory (https://patchstack.com/database/Wordpress/Plugin/miniorange-otp-verification/vulnerability/wordpress-miniorange-otp-verification-plugin-5-4-9-privilege-escalation-vulnerability?_s_id=cve) and the WordPress plugin repository to upgrade to the latest release above 5.4.9 once confirmed. Until a verified fixed version is applied, the most effective compensating control is to deactivate and remove the miniOrange OTP Verification plugin, accepting the trade-off that OTP-based registration/login verification will be unavailable; if the plugin cannot be removed, restrict access to the affected site's registration, login, and OTP-handling endpoints (for example via a WAF rule or virtual patch, which Patchstack offers, or IP allow-listing of administrative paths), understanding this may block legitimate users behind shared IPs and does not address the underlying privilege-assignment flaw. Also audit existing WordPress user accounts and roles for unexpected privilege elevation, since exploitation could have already altered account capabilities.

Affected VersionsENISA

miniorange otp verification 0 ≤5.4.9

Affected Packages

euvd miniorange_otp_verification no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected component is miniOrange OTP Verification, a WordPress plugin that adds one-time-password (OTP) based verification (email/SMS) to registration, login, and form flows. The root cause is CWE-266 (Incorrect Privilege Assignment), where the plugin grants a level of access or capability that does not match the intended trust boundary - for example assigning roles/capabilities or trusting client-supplied identity during an OTP-gated flow without proper server-side authorization checks. Because WordPress plugins execute within the site's PHP request lifecycle and can manipulate user roles and capabilities, a flaw here can elevate an actor's effective privileges within the WordPress authorization model. No CPE strings were supplied in the input, so exact affected configurations beyond the plugin name and version ceiling are not enumerated here.

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Severity by source

Vendor (patchstack) PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from Vendor (patchstack) · only source for this CVE.

CVSS VectorVendor: patchstack

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

Incorrect Privilege Assignment vulnerability in miniOrange miniorange otp verification miniorange-otp-verification allows Privilege Escalation.This issue affects miniorange otp verification: from n/a through <= 5.4.9.

Executive ViewAI

Why It Matters

The miniOrange OTP Verification WordPress plugin (versions 5.4.9 and earlier) contains a critical privilege escalation vulnerability that allows unauthenticated attackers to gain administrative control over any affected WordPress installation. This poses an immediate threat to all organizations using this plugin for authentication, as no vendor patch is currently available and exploitation requires only network access with no user interaction.

Business Impact: Severe
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) Disable or remove the miniOrange OTP Verification plugin immediately; (2) If operationally critical, implement WAF rules restricting access to plugin endpoints combined with network-level IP whitelisting for WordPress admin access; (3) Enable enhanced authentication logging and real-time alerting for admin-level events; (4) Evaluate alternative OTP providers with demonstrated security patching responsiveness; (5) Increase monitoring frequency for WordPress access logs pending patch availability.

Threat Intelligence Overview

EPSS Score
0.0%
Top 87% exploitable
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.0%
Patch available No
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Out-of-Cycle
Exploitation
None
System Exposure· derived
Open
Automatable
Yes
Human Impact
Very High
Technical Impact
Total

Priority Score

49
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Privilege escalation occurs when an attacker leverages flaws in access control mechanisms to gain permissions beyond what they were originally granted.

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