In most cases, trust boundaries are violated when a secret is exposed in a source code repository or an uncontrolled deployment environment.
Unintended people who don’t need to know the secret might get access to it. They might then be able to use it to gain unwanted access to associated
services or resources.
The trust issue can be more or less severe depending on the people’s role and entitlement.
What is the potential impact?
A Google client OAuth secret is a confidential string that is used to authenticate and authorize applications when they interact with Google APIs.
It is a part of the OAuth 2.0 protocol, which allows applications to access user data on their behalf.
The client secret is used in the OAuth flow to verify the identity of the application and ensure that only authorized applications can access user
data. It is typically used in combination with a client ID, which identifies the application itself.
If a Google client OAuth secret leaks to an unintended audience, it can have serious security implications. Attackers who obtain the client secret
can use it to impersonate the application and gain unauthorized access to user data. They can potentially access sensitive information, modify data,
or perform actions on behalf of the user without their consent.
The exact capabilities of the attackers will depend on the authorizations the corresponding application has been granted.