CVE-2020-21503
CVE-2020-21503 is a high-severity vulnerability in Waimai Super Cms Project Waimai Super Cms with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-668.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 1% (59th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-668
- Affected product: Waimai Super Cms Project Waimai Super Cms
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-21503?
- 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.
- How severe is CVE-2020-21503?
- CVE-2020-21503 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2020-21503 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-21503?
- CVE-2020-21503 affects Waimai Super Cms Project Waimai Super Cms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-21503?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-21503 published?
- CVE-2020-21503 was published on 2021-10-05 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:waimai_super_cms_project:waimai_super_cms:20150505:*:*:*:*:*:*:*
More vulnerabilities in Waimai Super Cms Project Waimai Super Cms
- CVE-2020-21506 — Medium (CVSS 6.1): waimai Super Cms 20150505 contains a cross-site scripting (XSS) vulnerability in the component…
- CVE-2020-21505 — Medium (CVSS 6.1): waimai Super Cms 20150505 contains a cross-site scripting (XSS) vulnerability in the component /admin.php/Link/addsave.
- CVE-2020-21504 — Medium (CVSS 6.1): waimai Super Cms 20150505 contains a cross-site scripting (XSS) vulnerability in the component…
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