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fix(isCreditCard): anchor Mastercard alternation so partial strings are rejected #2854

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fix(isCreditCard): anchor Mastercard alternation so partial strings are rejected #2854

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2 changes: 1 addition & 1 deletion src/lib/isCreditCard.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ const cards = {
dinersclub: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
discover: /^6(?:011|5[0-9][0-9])[0-9]{12,15}$/,
jcb: /^(?:2131|1800|35\d{3})\d{11}$/,
mastercard: /^5[1-5][0-9]{2}|(222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{12}$/, // /^[25][1-7][0-9]{14}$/;
mastercard: /^(?:5[1-5][0-9]{2}|222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{12}$/, // /^[25][1-7][0-9]{14}$/;
unionpay: /^(6[27][0-9]{14}|^(81[0-9]{14,17}))$/,
visa: /^(?:4[0-9]{12})(?:[0-9]{3,6})?$/,
};
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3 changes: 3 additions & 0 deletions test/validators.test.js
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Expand Up @@ -6612,6 +6612,9 @@ describe('Validators', () => {
],
invalid: [
'foo',
'5108', // short partial string (was wrongly accepted due to missing group around the alternation)
'5108foo', // start-anchored only, trailing chars ignored
'5398228707871527x', // valid 16-digit Mastercard with trailing junk
'36050234196908',
'375556917985515',
'375556917985515999999993',
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