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CVE-2020-21503

Description

waimai Super Cms 20150505 has a logic flaw allowing attackers to modify a price, before form submission, by observing data in a packet capture. By setting the index.php?m=gift&a=addsave credit parameter to -1, the product is sold for free.

POC

Reference

- https://github.com/caokang/waimai/issues/15

Github

No PoCs found on GitHub currently.