SysJust CTS Web - Reflected XSS

published 2021-05-28 5y ago modified 2026-06-17 4mo ago also EUVD-2021-19388

cvss: 4.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

The parameters of the specific functions in the CTS Web trading system do not filter special characters, which allows unauthenticated attackers can remotely perform reflected XSS and obtain the users’ connection token that triggered the attack.

Patch / fix

fixed in 1

sysjust cts_web 2021.3.24

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Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.7	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
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

Affected products

SysJust CTS Web

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

twcert.org.tw /tw/cp-132-4758-82b05-1.html
third-party-advisory
chtsecurity.com /news/40e165e2-e539-49bc-bcf1-e3b27c29e344
third-party-advisory

Sources

CVE List CVE-2021-32542
NVD CVE-2021-32542

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