CVE-2024-34071 — Vulnerability in Umbraco.Cms.Web.BackOffice — CVE...

MEDIUM

Umbraco CMS Open Redirect Bypass Protection

Published May 21, 2024Updated September 10, 2026Source: osv

Summary

### Impact Umbraco have an endpoint that is vulnerable to open redirects. The endpoint is protected so it requires the user to be signed into backoffice, before the vulnerability is exposed. ### Affected Version \>= 8.18.5, >= 10.5.0, >= 12.0.0, >= 13.0.0 ### Patches 8.18.14, 10.8.6, 12.3.10, 13.3.1

Advisory Timeline

First published May 21, 2024 (874 days ago).
Last revised September 10, 2026 — 842 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

NuGet

Update Umbraco.Cms.Web.BackOffice to 8.18.14 or later

dotnet add package Umbraco.Cms.Web.BackOffice --version 8.18.14

NuGet

Update Umbraco.Cms.Web.BackOffice to 12.3.10 or later

dotnet add package Umbraco.Cms.Web.BackOffice --version 12.3.10

NuGet

Update UmbracoCms.Core to 12.3.10 or later

dotnet add package UmbracoCms.Core --version 12.3.10

NuGet

Update UmbracoCms.Core to 10.8.6 or later

dotnet add package UmbracoCms.Core --version 10.8.6

NuGet

Update UmbracoCms.Core to 13.3.1 or later

dotnet add package UmbracoCms.Core --version 13.3.1

NuGet

Update Umbraco.Cms.Web.BackOffice to 10.8.6 or later

dotnet add package Umbraco.Cms.Web.BackOffice --version 10.8.6

NuGet

Update UmbracoCms.Core to 8.18.14 or later

dotnet add package UmbracoCms.Core --version 8.18.14

NuGet

Update Umbraco.Cms.Web.BackOffice to 13.3.1 or later

dotnet add package Umbraco.Cms.Web.BackOffice --version 13.3.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (8)

Affects 1 ecosystem: nuget (2).

Package	Ecosystem	Affected	Fixed In
Umbraco.Cms.Web.BackOffice	nuget	All versions	8.18.14
Umbraco.Cms.Web.BackOffice	nuget	12.0.0, 12.0.1, 12.1.0, 12.1.0-rc (+15 more)	12.3.10
UmbracoCms.Core	nuget	All versions	12.3.10
UmbracoCms.Core	nuget	All versions	10.8.6
UmbracoCms.Core	nuget	All versions	13.3.1
Umbraco.Cms.Web.BackOffice	nuget	10.5.0, 10.5.1, 10.6.0, 10.6.0-rc (+10 more)	10.8.6
UmbracoCms.Core	nuget	8.18.10, 8.18.11, 8.18.12, 8.18.13 (+5 more)	8.18.14
Umbraco.Cms.Web.BackOffice	nuget	13.0.0, 13.0.1, 13.0.2, 13.0.3 (+9 more)	13.3.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-601
Open RedirectMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 6.1 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

Frequently Asked Questions

What is CVE-2024-34071?: Umbraco CMS Open Redirect Bypass Protection This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 6.1/10).
How do I check if my project is affected by CVE-2024-34071?: CVE-2024-34071 affects Umbraco.Cms.Web.BackOffice and UmbracoCms.Core. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2024-34071 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

6.1

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

Also Known As

GHSA-j74q-mv2c-rxmp

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