CVE-2026-53909

MCO does not correctly validate types of uploaded files. File upload validation functionality relies only on client-side checks, which can be bypassed. An authorized, low-privileged attacker can upload files with arbitrary types to the server. Because vendor contact attempts were unsuccessful, th...

CVE-2026-53902

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/profile-sections/group-membership endpoint. An authenticated user can modify their group membership without proper authorization checks, allowing privilege escalation. An attacker can add themselves to arbitrar...

CVE-2026-53903

MCO is vulnerable to an Insecure Direct Object Reference IDOR vulnerability in the /customer/servlet/mco/webapi/trading-document/fetchPdfStatement endpoint. The application does not properly validate whether an authenticated user is authorized to access a requested document, allowing direct...

CVE-2026-53907

MCO is vulnerable to Stored Cross‑Site Scripting XSS via the application logo upload functionality. An attacker with the ability to change the application logo can upload a crafted SVG file containing malicious JavaScript code that is executed when the logo is rendered or opened. Because vendor...

CVE-2026-53905

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint. An authenticated, low-privileged user can retrieve administrator access control structures without proper authorization checks. This may expose sensitive...

CVE-2026-53908

MCO is vulnerable to User Enumeration through authentication-related functionalities. The application returns distinguishable responses for valid and invalid users during username reminder and password reset operations. An attacker can leverage these differences to enumerate valid usernames and...

CVE-2026-53909

MCO does not correctly validate types of uploaded files. File upload validation functionality relies only on client-side checks, which can be bypassed. An authorized, low-privileged attacker can upload files with arbitrary types to the server. Because vendor contact attempts were unsuccessful, th...

EUVD-2026-40955

MCO does not correctly validate types of uploaded files. File upload validation functionality relies only on client-side checks, which can be bypassed. An authorized, low-privileged attacker can upload files with arbitrary types to the server. Because vendor contact attempts were unsuccessful, th...

CVE-2026-53909

CVE-2026-53909 affects MCO where file upload validation relies solely on client-side checks, allowing an authorized low-priv attacker to upload arbitrary file types to the server. The vulnerability has been confirmed only in version 25.3.3.1, though other versions may also be affected. The docume...

CVE-2026-53908

MCO is vulnerable to User Enumeration through authentication-related functionalities. The application returns distinguishable responses for valid and invalid users during username reminder and password reset operations. An attacker can leverage these differences to enumerate valid usernames and...

EUVD-2026-40953

MCO is vulnerable to Stored Cross‑Site Scripting XSS via the application logo upload functionality. An attacker with the ability to change the application logo can upload a crafted SVG file containing malicious JavaScript code that is executed when the logo is rendered or opened. Because vendor...

CVE-2026-53907

MCO is vulnerable to Stored Cross‑Site Scripting XSS via the application logo upload functionality. An attacker with the ability to change the application logo can upload a crafted SVG file containing malicious JavaScript code that is executed when the logo is rendered or opened. Because vendor...

CVE-2026-53907

MCO is vulnerable to a Stored Cross‑Site Scripting (XSS) flaw in the application logo upload feature. A user who can change the logo can upload a crafted SVG containing JavaScript that executes when the logo renders, enabling code execution in the origin context. The vulnerability is confirmed fo...

CVE-2026-53905

CVE-2026-53905 affects MCO, with confirmation in version 25.3.3.1. The issue is an insufficient authorization enforcement in the /customer/servlet/mco/webapi/admin-view-hierarchy/get-acl-tree-structure endpoint, allowing an authenticated, low-privileged user to retrieve administrator access contr...

CVE-2026-53904

CVE-2026-53904 affects MCO; vulnerability is an Account Denial of Service due to improper password-reset implementation. The description across sources states that every reset request invalidates the current password and any issued temporary passwords, with no limits on reset requests. An attacke...

CVE-2026-53904

MCO is vulnerable to Account Denial of Service due to improper implementation of password reset functionality. Each password reset request invalidates previously set password as well as previously issued temporary passwords, furthermore, password resets are not limited in any way. An attacker who...

CVE-2026-53903

CVE-2026-53903 affects MCO via the insecure endpoint /customer/servlet/mco/webapi/trading-document/fetchPdfStatement. The underlying issue is an IDOR: the app does not properly validate that an authenticated user is authorized to access a requested document, allowing retrieval based on a user-sup...

EUVD-2026-40949

MCO is vulnerable to an Insecure Direct Object Reference IDOR vulnerability in the /customer/servlet/mco/webapi/trading-document/fetchPdfStatement endpoint. The application does not properly validate whether an authenticated user is authorized to access a requested document, allowing direct...

CVE-2026-53902

MCO does not properly enforce authorization checks in the /customer/servlet/mco/webapi/profile-sections/group-membership endpoint. An authenticated user can modify their group membership without proper authorization checks, allowing privilege escalation. An attacker can add themselves to arbitrar...

CVE-2026-53902

The CVE-2026-53902 issue affects MCO’s web API, specifically the /customer/servlet/mco/webapi/profile-sections/group-membership endpoint. The root cause is improper authorization checks, enabling an authenticated user to modify their group membership and perform privilege escalation by adding the...