High severity7.5NVD Advisory· Published Oct 5, 2021· Updated Jun 17, 2026
CVE-2020-21503
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- waimai/Super Cmsdescription
Patches
Vulnerability mechanics
References
1- github.com/caokang/waimai/issues/15nvdExploitThird Party Advisory
News mentions
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