CVE-2026-3277 Hardcoded credentials in PowerShell Universal

Medium 5.5 Published 27 Feb 2026 Updated 30 Mar 2026

Attackers with file read access can obtain OIDC client secrets stored in cleartext, potentially leading to account takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-3277?

CVE-2026-3277 is a medium-severity vulnerability in Devolutions PowerShell Universal, published on 27 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

The OpenID Connect (OIDC) authentication configuration in PowerShell Universal before 2026.1.3 stores the OIDC client secret in cleartext in the .universal/authentication.ps1 script, which allows an attacker with read access to that file to obtain the OIDC client credentials

Weakness: CWE-312

Which versions are affected by CVE-2026-3277?

It affects 1 product.

Products include Ironmansoftware Powershell Universal.

How do I fix CVE-2026-3277?

No fix has been published for CVE-2026-3277 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-3277 being exploited?

There is no known exploitation of CVE-2026-3277 in the wild and no public exploit code.

Sources

Also known as GHSA-vrv3-8mcq-ppf5.