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CVE-2021-42335

19
FAUCET Score

CVE-2021-42335 describes a stored cross-site scripting (XSS) vulnerability in the Easytest bulletin board management function of the huaju easytest_online_learning_test_platform. This flaw allows authenticated attackers to inject and execute malicious JavaScript due to insufficient filtering of special characters. Rated as MEDIUM severity (CVSS 5.4), successful exploitation requires user privileges and user interaction, potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1705CPE matchmatch criteria
cpe:2.3:a:huaju:easytest_online_learning_test_platform:1705:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 71st percentile among its peer group of 15,224 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

twcert.org.tw / tw/cp-132-5206-3cd3f-1.html
Third Party Advisory