CVE-2020-21503

PoC —

CVSS 3.1

7.5 high

EPSS

1%p62

Published

Oct 5, 2021 (Oct 5, 2021)

Modified

Jun 17, 2026

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.

Vendors: waimai super cms project
Products: waimai super cms
Weakness: CWE-668
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (1.1%)

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