CVE-2021-42335

Name: CVE-2021-42335
Creator: NVD / NIST
Published: 2021-10-15T12:15:07.947+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2021-42335 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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.. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.57%

42.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Huaju	Easytest Online Learning Test Platform	1705

References

https://www.twcert.org.tw/tw/cp-132-5206-3cd3f-1.htmlThird Party Advisory
https://www.twcert.org.tw/tw/cp-132-5206-3cd3f-1.htmlThird Party Advisory

Timeline

Published: Oct 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42335?

How severe is CVE-2021-42335?

CVE-2021-42335 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42335?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-42335?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST