vulnerability / NVI-00015184 / Revision 1
Auth.js: OAuth state, nonce, and PKCE check cookies are not bound to the provider that created them
GitHub lists this reviewed advisory for @auth/core, next-auth, next-auth. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
6.8 medium
GitHub source severity; exploitability and local consequence require separate evidence.
As of · GitHub Advisory Database
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
@auth/core
source listed<= 0.41.2
## Summary Auth.js stores the OAuth/OIDC anti-CSRF checks (`state`, `nonce`, and the PKCE verifier) in global cookies that are not bound to the provider that created them. On callback, a check value minted during a sign-in started with one provider can satisfy the callback for a different provider, because the stored cookie is not verified against the callback provider's identity (provider id, issuer, client id, or redirect URI). In a multi-provider app that allows account linking while logged in, this provider-confusion / mix-up condition can let an attacker link their account at a second provider to a victim's user. ## Am I affected? You may be affected if **all** of the following hold: - You use `next-auth` `= 5.0.0-beta.1, <= 5.0.0-beta.31`, or `@auth/core` `<= 0.41.2`. - You configure multiple OAuth/OIDC providers. - You allow users to link additional providers while logged in. - At least one configured provider's authorization request is observable by an attacker, and at least one target provider's callback can be satisfied without a PKCE verifier (i.e. it relies only on `state` or only on `nonce`). You are **not** affected if you use a single OAuth prov
next-auth
source listed>= 5.0.0-beta.1, <= 5.0.0-beta.31
## Summary Auth.js stores the OAuth/OIDC anti-CSRF checks (`state`, `nonce`, and the PKCE verifier) in global cookies that are not bound to the provider that created them. On callback, a check value minted during a sign-in started with one provider can satisfy the callback for a different provider, because the stored cookie is not verified against the callback provider's identity (provider id, issuer, client id, or redirect URI). In a multi-provider app that allows account linking while logged in, this provider-confusion / mix-up condition can let an attacker link their account at a second provider to a victim's user. ## Am I affected? You may be affected if **all** of the following hold: - You use `next-auth` `= 5.0.0-beta.1, <= 5.0.0-beta.31`, or `@auth/core` `<= 0.41.2`. - You configure multiple OAuth/OIDC providers. - You allow users to link additional providers while logged in. - At least one configured provider's authorization request is observable by an attacker, and at least one target provider's callback can be satisfied without a PKCE verifier (i.e. it relies only on `state` or only on `nonce`). You are **not** affected if you use a single OAuth prov
next-auth
source listed<= 4.24.14
## Summary Auth.js stores the OAuth/OIDC anti-CSRF checks (`state`, `nonce`, and the PKCE verifier) in global cookies that are not bound to the provider that created them. On callback, a check value minted during a sign-in started with one provider can satisfy the callback for a different provider, because the stored cookie is not verified against the callback provider's identity (provider id, issuer, client id, or redirect URI). In a multi-provider app that allows account linking while logged in, this provider-confusion / mix-up condition can let an attacker link their account at a second provider to a victim's user. ## Am I affected? You may be affected if **all** of the following hold: - You use `next-auth` `= 5.0.0-beta.1, <= 5.0.0-beta.31`, or `@auth/core` `<= 0.41.2`. - You configure multiple OAuth/OIDC providers. - You allow users to link additional providers while logged in. - At least one configured provider's authorization request is observable by an attacker, and at least one target provider's callback can be satisfied without a PKCE verifier (i.e. it relies only on `state` or only on `nonce`). You are **not** affected if you use a single OAuth prov
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-x445-f3h2-j279 ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.