Chrome 147: POST request returns 302 redirect instead of JSON on lite checkout - SyntaxError: Unexpected end of JSON input

[lulu51]

Hello,

I am experiencing a critical issue on my CS-Cart store (ppcashop.fr). When customers click “Place order” on the checkout page, they get the following error on Chrome only (not Firefox or Opera):

“SyntaxError: Unexpected end of JSON input”

Using Chrome DevTools Network tab, I can see that the POST request to index.php returns a 302 redirect to the homepage instead of a JSON response.

The issue seems related to Chrome’s recent SameSite cookie policy changes. The session cookie is set to SameSite=lax which may be blocking AJAX POST requests in Chrome 147+.

CS-Cart version: 4.19.1.SP2 The checkout uses the native CS-Cart lite checkout.

Could you please investigate and provide a fix or patch?

Thank you, Lulu ppcashop.fr

[ecomlabs]

I have placed order 2 times and failed to reproduce the issue

[lulu51]

Mobile phone and Chrome 147
Not problem Edge, Firefox, Opéra
Lulu

[lulu51]

[lulu51]

[CS-Cart_team]

I was unable to reproduce the issue either.

[lulu51]

Thank you for the test. Did you try with Chrome? It is the only one that also generates an error, including on my Android mobile. Thanks, Lulu.

[CS-Cart_team]

Hi!

I was unable to reproduce this issue in Chrome either

Screenshots