CVE-2026-19051 Overview
CVE-2026-19051 is a plaintext password storage vulnerability affecting Menulux Portal from Menulux Software Inc. The flaw allows an authenticated network attacker to retrieve embedded sensitive data, including credentials stored without cryptographic protection. The issue is classified under [CWE-256], covering plaintext storage of a password. The vendor addressed the issue in Menulux Portal builds numbered 20260903211448 and later.
Critical Impact
An authenticated attacker with low privileges can retrieve embedded passwords over the network, enabling credential reuse, lateral movement, and unauthorized access to protected resources.
Affected Products
- Menulux Software Inc. Menulux Portal
- Menulux Portal versions before 20260903211448
- Deployments exposing Menulux Portal over the network to authenticated users
Discovery Timeline
- 2026-09-04 - CVE-2026-19051 published to NVD
- 2026-09-08 - Last updated in NVD database
Technical Details for CVE-2026-19051
Vulnerability Analysis
Menulux Portal stores passwords in plaintext within an embedded location accessible to authenticated users. Any account with low-level privileges can read the stored credentials by interacting with the exposed data surface. The vulnerability requires no user interaction and is reachable over the network. Successful exploitation exposes credentials that may unlock additional accounts, integrations, or administrative functions inside the portal environment.
Root Cause
The root cause is a design flaw mapped to [CWE-256], Plaintext Storage of a Password. Menulux Portal persists credential material without hashing, encryption, or access segmentation between the credential store and standard user contexts. Because the credentials are embedded within resources reachable by authenticated sessions, the application effectively grants credential read access to any authorized account.
Attack Vector
An attacker authenticates to Menulux Portal with a low-privileged account. The attacker then queries the interface or backend resource that returns the embedded password material. Once retrieved, the plaintext credentials can be reused against Menulux Portal itself or against connected systems that share the same secrets. No privilege escalation exploit or memory corruption primitive is required. Refer to the Siber Güvenlik Notification TR-26-0989 for additional technical context.
Detection Methods for CVE-2026-19051
Indicators of Compromise
- Unexpected reads of configuration, profile, or integration endpoints that return embedded credential fields.
- Authentication events using service or administrative accounts originating from user endpoints not normally associated with those identities.
- Sudden expansion of session activity from low-privileged accounts touching credential-bearing resources.
Detection Strategies
- Inventory Menulux Portal deployments and confirm build number is 20260903211448 or later.
- Inspect application logs for repeated access to endpoints that return sensitive fields to non-administrative roles.
- Correlate portal access events with downstream authentication attempts to identify credential reuse patterns.
Monitoring Recommendations
- Alert on authenticated API or web requests that enumerate account, integration, or configuration objects at abnormal rates.
- Monitor accounts recently used in Menulux Portal for authentication attempts against unrelated services.
- Track modification of user roles or credentials on the portal following any suspicious data-retrieval activity.
How to Mitigate CVE-2026-19051
Immediate Actions Required
- Upgrade Menulux Portal to build 20260903211448 or later as published by Menulux Software Inc.
- Rotate all credentials stored in or configured through Menulux Portal, including integration secrets and service accounts.
- Review portal user accounts and revoke access for unused or over-privileged identities.
Patch Information
Menulux Software Inc. resolved CVE-2026-19051 in Menulux Portal versions after 20260903211448. Administrators should validate the deployed build number and apply the vendor-supplied update. See the Siber Güvenlik Notification TR-26-0989 for vendor guidance.
Workarounds
- Restrict Menulux Portal network exposure to trusted administrative networks until patched.
- Enforce least-privilege role assignments to reduce the number of accounts able to reach credential-bearing resources.
- Rotate any credentials that may have been exposed and prohibit reuse of those secrets across other systems.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
