What’s Vulnerable › Vulnerabilities

CVE-2021-42335: Huachu Digital Technology Co.,Ltd. Easytest - Stored XSS

• Severity: low (CVSS 3.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-15 · updated 2026-06-17
• Weakness: CWE-79

Description

Easytest bulletin board management function of online learning platform does not filter special characters. After obtaining a user’s privilege, remote attackers can inject JavaScript and execute stored XSS attack.

Affected products

• Huachu Digital Technology Co.,Ltd. Easytest: 1705

References

• https://www.twcert.org.tw/tw/cp-132-5206-3cd3f-1.html
• https://www.twcert.org.tw/tw/cp-132-5206-3cd3f-1.html

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