The MC-41359 commerce patch fixes the issue with missing SameSite cookie parameters settings. This patch is available when the Quality Patches Tool (QPT) 1.0.20 is installed. The patch ID is MC-41359. Please note that the issue is scheduled to be fixed in Adobe Commerce 2.4.3.
Affected products and versions
The patch is created for Adobe Commerce version: Adobe Commerce on cloud infrastructure 2.4.2
Compatible with Adobe Commerce versions: Adobe Commerce on-premises and Adobe Commerce on cloud infrastructure 2.3.6-p1, 2.4.2, 2.4.2-p1
Note: the patch might become applicable to other versions with new Quality Patches Tool releases. To check if the patch is compatible with your Adobe Commerce version, update the magento/quality-patches package to the latest version and check the compatibility on the QPT landing page. Use the patch ID as a search keyword to locate the patch.
Issue
Missing settings of the SameSite cookie parameter.
Steps to reproduce:
Prerequisites:
- Open Chrome and go to chrome://flags/
- Enable SameSite by default cookies and Cookies without SameSite must be secure.
- Open the Chrome inspector.
Scenario 1:
- Enable PayPal.
- Go to the store front.
- Add a product to the cart.
- Go to checkout.
Scenario 2:
If you have New Relic enabled the warning appears on any frontend page.
Actual result:
Warning message in the browser console: A cookie associated with a cross-site resource was set without a SameSite attribute.
Expected result:
"lax" should not be added to the cookie domain; the samesite attribute should be present with default value.
Apply the patch
To apply individual patches, use the following links depending on your deployment method:
- Adobe Commerce or Magento Open Source on-premises: Software Update Guide > Apply Patches in our developer documentation.
- Adobe Commerce on cloud infrastructure: Upgrades and Patches > Apply patches in our developer documentation.
Related reading
To learn more about Quality Patches Tool, refer to:
- Quality Patches Tool released: a new tool to self-serve quality patches in our support knowledge base.
- Check if patch is available for your Adobe Commerce issue using Quality Patches Tool.
For info about other patches available in QPT tool, refer to Patches available in QPT tool in our developer documentation.