Vulnerability in Azure Active Directory Authentication Library
An elevation of privilege vulnerability exists in Azure Active Directory Authentication Library On-Behalf-Of flow, in the way the library caches tokens, aka 'Azure Active Directory Authentication Library Elevation of Privilege Vulnerability'.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | microsoft.identitymodel.clients.activedirectory | >= 5.0.0, < 5.2.0 | 5.2.0 |
References
- CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
-- Platform
- .NET (NuGet)
- Package
microsoft.identitymodel.clients.activedirectory- Disclosed
- 16.08.2019
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-xc6x-cq47-9chw - CC BY 4.0
Vulnerability history: microsoft.identitymodel.clients.activedirectory
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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