Fix Challenge-2-Broken-Crypto-4: close client-side coupon crypto oracle - #337

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beanbeah wants to merge 2 commits into

OWASP-CTF:dc34-ctffrom

beanbeah:ctf/r2-challenge-challenge-2-broken-crypto-4

Commits on Aug 9, 2026

fix: close insecure client-side coupon crypto oracle in BrokenCrypto4

beanbeah
and
claude
committed
7530bc3
fix: remove backdoor 100%%-off coupon from CryptShop seed data

beanbeah
and
claude
committed
3abbdcf