CVE-2021-20717

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-05-10 · updated 2026-06-17
Weakness: CWE-79

Description

Cross-site scripting vulnerability in EC-CUBE 4.0.0 to 4.0.5 allows a remote attacker to inject a specially crafted script in the specific input field of the EC web site which is created using EC-CUBE. As a result, it may lead to an arbitrary script execution on the administrator's web browser.

Affected products

EC-CUBE CO.,LTD. EC-CUBE: from 4.0.0 before 4.0.5 — fixed in 4.0.5

How to fix

Upgrade to a fixed version: EC-CUBE CO.,LTD. EC-CUBE 4.0.5. Check the vendor advisory for mitigations.

References

https://jvn.jp/en/jp/JVN97554111/index.html
https://www.ec-cube.net/news/detail.php?news_id=383
https://www.ec-cube.net/news/detail.php?news_id=384
https://jvn.jp/en/jp/JVN97554111/index.html
https://www.ec-cube.net/news/detail.php?news_id=383
https://www.ec-cube.net/news/detail.php?news_id=384

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