Why did PayPal automatically update the expiration date on my card?
We may automatically update your card’s expiration date when we have new information from your card issuer. We do this in partnership with major credit card issuers, so your payment doesn’t fail and you don’t have to update your card details manually.
What information does the card issuer provide to PayPal?
The card issuer provides us with a new card number and/or expiration date. We don't use or store your card CVV code, and the card data we receive from your card issuer is encrypted. Your card issuer can notify us of any changes to your card (except for name changes), including an account closure.