Package Instance

Cross-Site Scripting in keystone
Versions of `keystone` prior to 4.0.0 are vulnerable to Cross-Site Scripting (XSS). The package fails to sanitize user input on the `Contact Us` page,  allowing attackers to submit contact forms with malicious JavaScript in the message field. The output is not properly encoded leading an admin that opens new inquiry to execute the arbitrary JavaScript supplied in their browser.


## Recommendation

Update to version 4.0.0 or later.

### Summary
When `ui.isAccessAllowed` is `undefined`, the `adminMeta` GraphQL query is publicly accessible, that is to say, no session is required for the query.

This is different to the behaviour of the default AdminUI middleware, which by default will only be publicly accessible if a `session` strategy is not defined. 

### Impact
This vulnerability does not affect developers using the `@keystone-6/auth` package, or any users that have written their own `ui.isAccessAllowed` (that is to say, you are unaffected if `ui.isAccessAllowed` is defined).

This vulnerability does affect developers who thought that their `session` strategy will, by default, enforce that `adminMeta` is inaccessible by the public in accordance with that strategy; akin to the behaviour of the AdminUI middleware.

### Patches
This vulnerability has been patched in `@keystone-6/core` version `5.5.1`.

### Workarounds
You can opt to write your own `isAccessAllowed` to work-around this vulnerability.

### References
Pull request https://github.com/keystonejs/keystone/pull/8771

Keystone is vulnerable to CSV injection
CSV Injection (aka Excel Macro Injection or Formula Injection) exists in admin/server/api/download.js and lib/list/getCSVData.js in KeystoneJS before 4.0.0-beta.7 via a value that is mishandled in a CSV export.

Cross-Site Request Forgery (CSRF) in keystone
Versions of `keystone` prior to 4.0.0 are vulnerable to Cross-Site Request Forgery (CSRF). The package fails to validate the presence of the `X-CSRF-Token` header, which may allow attackers to carry actions on behalf of other users on all endpoints.


## Recommendation

Update to version 4.0.0 or later.