himmelblau-idm himmelblau up to 2.3.10/3.1.4 authorization

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in himmelblau-idm himmelblau up to 2.3.10/3.1.4. This vulnerability affects unknown code. Performing a manipulation results in authorization. This vulnerability is identified as CVE-2026-45108. The attack is only possible with local access. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in himmelblau-idm himmelblau up to 2.3.10/3.1.4. This affects some unknown functionality. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Himmelblau is an interoperability suite for Microsoft Azure Entra ID and Intune. From 2.0.0 to before 3.1.5 and 2.3.11, Himmelblau contained an authentication bypass vulnerability in the Device Authorization Grant (DAG) flow that allowed a user within the same Entra ID domain to obtain a local Unix session as another user by providing their own valid credentials. The vulnerability existed in the token_validate function, which validated domain aliases for legitimate multi-domain scenarios but failed to verify that the local part (username) of the authenticated user's UPN matched the requested account username. The function only compared domains, not the complete usernames. This vulnerability is fixed in 3.1.5 and 2.3.11.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-45108 since 05/08/2026. The exploitability is told to be difficult. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 322924 (SUSE SLES16: himmelblau / himmelblau-qr-greeter / himmelblau-sshd-config / etc (SUSE-SU-2026:22186-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.3.11 or 3.1.5 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (322924) and EUVD (EUVD-2026-32633). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.4
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: Authorization
CWE: CWE-863 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 322924
Nessus Name: SUSE SLES16: himmelblau / himmelblau-qr-greeter / himmelblau-sshd-config / etc (SUSE-SU-2026:22186-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: himmelblau 2.3.11/3.1.5

Timelineinfo

05/08/2026 CVE reserved
05/27/2026 +19 days Advisory disclosed
05/27/2026 +0 days VulDB entry created
06/26/2026 +30 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-45108 (🔒)
GCVE (CVE): GCVE-0-2026-45108
GCVE (VulDB): GCVE-100-366501
EUVD: 🔒

Entryinfo

Created: 05/27/2026 21:57
Updated: 06/26/2026 17:23
Changes: 05/27/2026 21:57 (62), 05/28/2026 03:11 (1), 06/26/2026 17:23 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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