CVE-2026-3277
Cleartext OIDC Client Secret Exposure in PowerShell Universal Authentication
Publication date: 2026-02-27
Last updated on: 2026-03-30
Assigner: Devolutions Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ironmansoftware | powershell_universal | to 2026.1.3 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-312 | The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The vulnerability in PowerShell Universal before version 2026.1.3 involves the OpenID Connect (OIDC) authentication configuration storing the OIDC client secret in cleartext within the .universal/authentication.ps1 script.
This means that if an attacker has read access to this script file, they can easily obtain the OIDC client credentials.
How can this vulnerability impact me? :
An attacker who gains read access to the .universal/authentication.ps1 script can retrieve the OIDC client secret, which may allow unauthorized access to authentication systems relying on these credentials.
This could lead to compromised user authentication, unauthorized access to protected resources, and potential further exploitation within the affected environment.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know