nodeSolidServer / nodeSolidServer/node-solid-server
Cookie not set with SameSite attribute
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- Dominant language
- JavaScript
- Stars
- 1.8k
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Description
As noted on solid-auth-client https://github.com/solid/solid-auth-client/issues/151, Chrome is requiring third party cookies to be set with SameSite=None and Secure. While this setting is not yet active on desktop, it is active on Android and therefore breaks all Solid apps using the nssidp.sid cookie from .solid.community.
This can still be bypassed by disabling chrome://flags/#same-site-by-default-cookies.
Presumably non-cookie based authentication doesn't have this issue but I'm not sure it's possible to turn off cookie-based authentication at the moment (https://github.com/solid/node-solid-server/issues/672)
I'm not an expert, but it appears the change required is in the definition of the express-session settings
https://github.com/solid/node-solid-server/blob/master/lib/create-app.js#L305
https://www.npmjs.com/package/express-session#cookiesamesite
It may be sufficient to simply use:
cookie: {
maxAge: 24 * 60 * 60 * 1000,
sameSite:'None'
}
It seems that http connections should also be completely dropped for authenticated sessions because the third party cookie won't be sent without cookie.secure=true anyway.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start in lib/create-app.js around line 305 and review the express-session cookie settings alongside the express-session documentation. Reproduce the nssidp.sid behavior in Android Chrome with SameSite cookie enforcement, then verify that authenticated Solid apps can establish and use the session without breaking the supported connection modes.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- express, javascript
- Domain
- authentication, backend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100