CVE-2025-23041

Summary of CVE-2025-23041 : Umbraco.Forms (NuGet) suffers from server-side input validation risk due to character limit checks being enforced only on the client. The root cause is lack of server-side validation for maximum field length in short and long answer fields. Affected versions have patch...

CVE-2025-23041 Short and Long Answer Fields Are Not Validated Server-Side For Maximum Length in Umbraco.Forms

Umbraco.Forms is a web form framework written for the nuget ecosystem. Character limits configured by editors for short and long answer fields are validated only client-side, not server-side. This issue has been patched in versions 8.13.16, 10.5.7, 13.2.2, and 14.1.2. Users are advised to upgrade...

CVE-2025-23041 Short and Long Answer Fields Are Not Validated Server-Side For Maximum Length in Umbraco.Forms

Umbraco.Forms is a web form framework written for the nuget ecosystem. Character limits configured by editors for short and long answer fields are validated only client-side, not server-side. This issue has been patched in versions 8.13.16, 10.5.7, 13.2.2, and 14.1.2. Users are advised to upgrade...

PT-2025-4787 · Umbraco · Umbraco Forms

Name of the Vulnerable Software and Affected Versions: Umbraco.Forms versions prior to 8.13.16 Umbraco.Forms versions prior to 10.5.7 Umbraco.Forms versions prior to 13.2.2 Umbraco.Forms versions prior to 14.1.2 Description: The character limits configured by editors for short and long answer...

Umbraco Forms 输入验证错误漏洞

Umbraco Forms is a form builder. An input validation error vulnerability exists in Umbraco Forms that stems from a short and long answer field character restriction for client-side validation only, which could lead to a data injection attack...

GHSA-MGR7-5782-6JH9 The Umbraco Heartcore headless client library uses a vulnerable Refit dependency package

Impact The Heartcore headless client library depends on Refit to assist in making HTTP requests to Heartcore public APIs. Refit recently published an advisory regarding a CRLF injection vulnerability whereby it is possible for a malicious user to smuggle additional headers or potentially body...

The Umbraco Heartcore headless client library uses a vulnerable Refit dependency package

Impact The Heartcore headless client library depends on Refit to assist in making HTTP requests to Heartcore public APIs. Refit recently published an advisory regarding a CRLF injection vulnerability whereby it is possible for a malicious user to smuggle additional headers or potentially body...

PT-2025-3119

Name of the Vulnerable Software and Affected Versions Umbraco CMS version 14.3.1 Description A stored cross-site scripting XSS vulnerability in Umbraco CMS allows attackers to execute arbitrary web scripts or HTML via a crafted payload. This issue is only possible via authenticated users who have...

The vulnerability in the component `/src/UIOMatic/wwwroot/backoffice/resources/uioMaticObject.r` of the software for automatically generating integrated user interfaces in Umbraco UI-O-Matic allows a hacker to execute arbitrary SQL code.

The vulnerability of the /src/UIOMatic/wwwroot/backoffice/resources/uioMaticObject.r component of the software for automatically generating integrated user interfaces in Umbraco UI-O-Matic is related to the lack of security measures for handling SQL queries. Exploiting this vulnerability allows a...

Cross-Site Scripting (XSS)

umbraco.cms.core is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to improper handling of the argument culture in the file /Umbraco/preview/frame?id of the Dashboard component, which allows remote attackers to manipulate the argument and execute malicious scripts...

Improper Session Termination

umbraco.cms is vulnerable to Improper Session Termination. The vulnerability is due to the server session not being fully terminated during an explicit sign-out, which could allow unauthorized access...

Improper Access Control

Umbraco is vulnerable to Improper Access Control. The vulnerability is due to insufficient restrictions on API access and is caused by improper access control in the webhook API, allows low-privilege users to retrieve information that should be accessible only to users with settings section...

Cross-Site Scripting (XSS)

Umbraco is vulnerable to Cross-Site Scripting XSS. The vulnerability is due to insufficient input sanitization in the Dictionary section, which can allow attackers to inject and execute malicious scripts when accessed by a user with admin privileges...

Remote Code Execution (RCE)

Umbraco is vulnerable to remote code execution. The vulnerability is due to improper handling of SVG files, where script tags within these files are not properly validated or stripped, allowing potential code execution when previewed by Backoffice users in full-screen mode...

Session Fixation

Umbraco is vulnerable to Session Fixation. The vulnerability is due to a session timeout discrepancy where the Backoffice logout page displays a session timeout message before the server session expires, leading users to believe they are logged out about 30 seconds early. It allows an attacker to...

Duplicate Advisory: Umbraco CMS Cross-site Scripting vulnerability

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-69cg-w8vm-h229. This link is maintained to preserve external references. Original Description A vulnerability was found in Umbraco CMS 12.3.6. It has been classified as problematic. Affected is an unknown functi...

GHSA-4GMQ-M9VP-JRWG Duplicate Advisory: Umbraco CMS Cross-site Scripting vulnerability

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-69cg-w8vm-h229. This link is maintained to preserve external references. Original Description A vulnerability was found in Umbraco CMS 12.3.6. It has been classified as problematic. Affected is an unknown functi...

CVE-2024-10761

A vulnerability was found in Umbraco CMS up to 10.7.7/12.3.6/13.5.2/14.3.1/15.1.1. It has been classified as problematic. Affected is an unknown function of the file /Umbraco/preview/frame?id of the component Dashboard. The manipulation of the argument culture leads to cross site scripting. It is...

CVE-2024-10761 Umbraco CMS Dashboard frame cross site scripting

A vulnerability was found in Umbraco CMS up to 10.7.7/12.3.6/13.5.2/14.3.1/15.1.1. It has been classified as problematic. Affected is an unknown function of the file /Umbraco/preview/frame?id of the component Dashboard. The manipulation of the argument culture leads to cross site scripting. It is...

CVE-2024-10761

Summary: CVE-2024-10761 affects Umbraco CMS versions up to 10.7.7, 12.3.6, 13.5.2, 14.3.1, and 15.1.1. The issue is a cross-site scripting (XSS) in the Dashboard component, specifically an unknown function in /Umbraco/preview/frame?id{} where manipulation of the culture argument enables the attac...