CVE-2020-20640 json
Cross Site Scripting (XSS) vulnerability in ECShop 4.0 due to security filtering issues, in the user.php file, we can use the html entity e…
published 2021-06-28 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-13425
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.9%
- EPSS 0.9% chance of exploitation in 30 days, percentile 59%
- public exploits
- 0
- none known
Summary
Cross Site Scripting (XSS) vulnerability in ECShop 4.0 due to security filtering issues, in the user.php file, we can use the html entity encoding to bypass the security policy of the safety.php file, triggering the xss vulnerability.
Exploit prediction
0.88% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- jianshu.com https://www.jianshu.com/p/219755c047a1 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
jianshu.com
/p/219755c047a1
exploit, third-party-advisory
Sources
- CVE List CVE-2020-20640
- NVD CVE-2020-20640
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