blank page after SAML user login

problem

After upgrading from version 4.22.0.1 to version 4.22.1.0 when a user authenticates via single sign-on the browser screen stays white but a blue progress bar at the top.
Users that don't have SSO enabled can login normally.
I tested both Chrome and Firefox on Windows.

The Chrome console reports the following 2 errors:

user.js:458 SyntaxError: "undefined" is not valid JSON
at JSON.parse ()
at a (util.js:5:17)
at e.get (webStorage.js:20:27)
at user.js:319:45
at new Promise ()
at e.GetInfo (user.js:310:14)
at Array. (vuex.esm-browser.js:305:23)
at e.dispatch (vuex.esm-browser.js:1031:13)
at e.dispatch (vuex.esm-browser.js:914:21)
at permission.js:104:12

Uncaught (in promise) TypeError: Cannot convert undefined or null to object
at Object.keys ()
at permission.js:74:29
at new Promise ()
at e.GenerateRoutes (permission.js:73:14)
at Array. (vuex.esm-browser.js:305:23)
at e.dispatch (vuex.esm-browser.js:1031:13)
at e.dispatch (vuex.esm-browser.js:914:21)
at permission.js:106:19

versions

Cloudstack 4.22.1.0 on Rocky Linux 10.

The steps to reproduce the bug

select "single sign-on" in the login page and press the login button

...

What to do about it?

No response

@andrea-janna

@andrea-janna is the API still usable for the SSO user?

@DaanHoogland

@DaanHoogland
I'm not sure if I understood you question but I think the answer is yes, the API is usable.
For instance I can use CloudMonkey authenticating with the apikey and secretkey of the SSO user and successfully execute commands like "list zones" or "list accounts".

@DaanHoogland

@DaanHoogland
In the browser DevTools I can see that after the SSO login the following api functions are called:

listUsers
listGuiThemes

The HTTP status code is 200 and I can see the json payload in the responses.

@andrea-janna

@andrea-janna just to confirm, you're seeing this issue with all SAML users and not just with a particular user?

@shwstppr

@shwstppr
Yes I have this issue for the SAML users that existed before upgrading CloudStack and also for SAML users created after the upgrade.

I did a bit more digging as we have the same issue.

the local storage value primate__MS_ID: undefined seems to cause it.
for SAML login its not set correctly, if I have some breakpoints in 'GetInfo ({ commit }, switchDomain) {' I can update it to the correct value (i got from a normal login) and then the site loads fie.

I have a small workaround in place added to the base index.html file. It captures primate__MS_ID being set to undefined and instead sets it to empty string, which for SAML users is what it was being set to in 4.22.0.1. Admin/non-SAML users unaffected.
A better fix is to sort out the cookie issue but this works for now...

<script>
    (function() {
        try {
            if (window.localStorage) {
                const orig = localStorage.setItem;
                localStorage.setItem = function(k, v) {
                    orig.apply(this, [k, v === undefined && k === 'primate__MS_ID' ? '""' : v]);
                }
                ;
                if (localStorage.getItem('primate__MS_ID') === 'undefined') {
                    localStorage.setItem('primate__MS_ID', '""');
                }
            }
        } catch (e) {}
    }
    )();
</script>

We upgraded yesterday and faced the same problem. I chased down the issue, fixed it, and opened a PR.

Navigation Menu

Repository navigation

blank page after SAML user login #13277

problem

versions

The steps to reproduce the bug

What to do about it?

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

blank page after SAML user login #13277

Description

problem

versions

The steps to reproduce the bug

What to do about it?

Activity

DaanHoogland commented on May 28, 2026

andrea-janna commented on May 28, 2026

andrea-janna commented on May 28, 2026

shwstppr commented on May 29, 2026

andrea-janna commented on May 29, 2026

Danie-THG commented on Jun 2, 2026

zg-kim-robinson commented on Jun 11, 2026

jmgsky commented on Jun 11, 2026

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions