5.4

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2023-49273

CVE-2023-49273: Privilege Escalation using Spoofing

Impact

Users with low privileges ( Editor, etc) are able to access some unintended endpoints.

Explanation of the vulnerability

Possible to delete redirect urls, when disabled by admin with only access to backoffice Possible to access the examine dashboard with only access to backoffice Possible to access the published cache dashboard with only access to backoffice Possible to access the telemetry dashboard with only access to backoffice Possible to access the languages with only access to backoffice Possible to access the stylesheets with only access to backoffice

(GitHub Advisory)

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CVE-2023-49273

CVE-2023-49273:

5.4

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
Umbraco.CMS	nuget	>= 8.0.0, < 8.18.10	8.18.10
Umbraco.CMS	nuget	>= 9.0.0, < 10.8.1	10.8.1
Umbraco.CMS	nuget	>= 11.0.0, < 12.3.4	12.3.4

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability describes unauthorized access to multiple administrative endpoints (redirect URL deletion, examine dashboard, published cache, telemetry, languages, and stylesheets) by low-privilege users. In ASP.NET MVC architectures like Umbraco CMS, these functionalities would typically be implemented as controller actions. The pattern of missing/inadequate authorization attributes ([Authorize] with appropriate roles) on these controller methods matches the described vulnerability symptoms. Each listed controller action corresponds directly to one of the exposed functionalities mentioned in the advisory, and the confidence is high because these are core administrative endpoints that would require explicit authorization checks in a CMS context.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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