Umbraco CMS up to 10.8.9/13.8.0 Login API response discrepancy

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Umbraco CMS up to 10.8.9/13.8.0. This affects an unknown part of the component Login API. The manipulation results in response discrepancy. This vulnerability is known as CVE-2025-46736. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Umbraco CMS up to 10.8.9/13.8.0. Affected is an unknown function of the component Login API. The manipulation with an unknown input leads to a response discrepancy vulnerability. CWE is classifying the issue as CWE-204. The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere. This is going to have an impact on confidentiality. CVE summarizes:

Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds are available.

The advisory is available at github.com. This vulnerability is traded as CVE-2025-46736 since 04/28/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 10.8.10 or 13.8.1 eliminates this vulnerability. Applying the patch 14fbd20665b453cbf094ccf4575b79a9fba07e03 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.3
CNA Vector (GitHub_M): 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Response discrepancy
CWE: CWE-204 / CWE-203 / CWE-200
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CMS 10.8.10/13.8.1
Patch: 14fbd20665b453cbf094ccf4575b79a9fba07e03

Timelineinfo

04/28/2025 🔍
05/06/2025 +8 days 🔍
05/06/2025 +0 days 🔍
09/03/2025 +120 days 🔍

Sourcesinfo

Advisory: GHSA-4g8m-5mj5-c8xg
Status: Confirmed

CVE: CVE-2025-46736 (🔍)
GCVE (CVE): GCVE-0-2025-46736
GCVE (VulDB): GCVE-100-307650

Entryinfo

Created: 05/06/2025 21:09
Updated: 09/03/2025 22:06
Changes: 05/06/2025 21:09 (67), 09/03/2025 22:06 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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