CVE-2023-49273— Umbraco CMS vulnerable to Privilege Escalation using Spoofing
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I. Basic Information for CVE-2023-49273
Vulnerability Information
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Vulnerability Title
Umbraco CMS vulnerable to Privilege Escalation using Spoofing
Source: NVD (National Vulnerability Database)
Vulnerability Description
Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.4, users with low privileges (Editor, etc.) are able to access some unintended endpoints. Versions 8.18.10, 10.8.1, and 12.3.4 contain a patch for this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Umbraco 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Umbraco是丹麦Umbraco公司的一套C#编写的开源的内容管理系统（CMS）。 Umbraco 存在安全漏洞，该漏洞源于低权限用户（编辑者等）能够访问一些非预期的端点。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| umbraco | Umbraco-CMS | >= 8.0.0, < 8.18.10 | - |
II. Public POCs for CVE-2023-49273
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · umbraco · 2023-12-12 · 8 CVEs total
| CVE-2023-49089 | 7.7 HIGH | Umbraco CMS possible path traversal when creating packages from backoffice |
| CVE-2023-49278 | 5.3 MEDIUM | Umbraco CMS brute force exploit can be used to collect valid usernames |
| CVE-2023-48227 | 4.3 MEDIUM | Umbraco CMS Backoffice User can bypass "Publish" restriction |
| CVE-2023-48313 | 4.3 MEDIUM | Umbraco contains a DOM-XSS |
| CVE-2023-49274 | 3.7 LOW | Umbraco CMS SMTP misconfiguration exposes potential registered user email |
| CVE-2023-49279 | 3.7 LOW | Umbraco CMS vulnerable to stored XSS via SVG File Upload |
| CVE-2023-38694 | 3.5 LOW | Umbraco CMS vulnerable to possible injection of HTML in an unintended form |
IV. Related Vulnerabilities
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Same vendor: umbraco
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Umbraco has Stored XSS in UFM Rendering Pipeline via Permiss - CVE-2026-31832
Umbraco Backoffice API Allows Unauthorized Modification of D - CVE-2026-27449
Umbraco.Engage.Forms Allows Unauthorized Access to Multiple - CVE-2026-24687
Umbraco.Forms has path traversal and file enumeration vulner
Same weakness: CWE-863
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V. Comments for CVE-2023-49273
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