Can't login to admin backend, since new security patch 2.4.4-p8

[Eddcapone]

Sometimes e.g. after the weekend, we suddenly can't login into the admin area / backend of our shop, since installing this security patch: https://helpx.adobe.com/security/products/magento/apsb24-18.html

We need to delete our cookies to be able to login again.

Error:

Argument #1 ($datetime) must be of type string, null given in /vendor/magento/module-security/Model/AdminSessionInfo.php:136

magento2/app/code/Magento/Security/Model/AdminSessionInfo.php

Line 136 in 9721cc2

$lastUpdatedTime = strtotime($lastUpdatedTime);

This is how it used to be in 2.4-develop:

    $lastUpdatedTime = $lastUpdatedTime === null ? 0 : strtotime($lastUpdatedTime);

I don't have information on how to reproduce this.

[m2-assistant]

Hi @Eddcapone. Thank you for your report.
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[m2-assistant]

Hi @engcom-Dash. Thank you for working on this issue.
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[engcom-Dash]

Hi @Eddcapone

Thanks for reporting and collaboration.

Can you please share the details steps to reproduce the issue and screenshots in order for us to reproduce the issue accurately.

Thanks.

[Eddcapone]

@engcom-Dash As written here. I don't have informations on how to reproduce this. We just knows that it happens to us since we installed the patch. Last time it happend after the weekend.

[engcom-Dash]

Hi @Eddcapone

Thanks for reporting and collaboration.

We have a similar issue - 38704

Hence, we are considering this as a duplicate ticket and closing this ticket.

[Eddcapone]

@engcom-Dash Please explain how it is remotely similar. It has nothing to do with our issue.