CVE-2021-32542Network attack vector

Session-token theft via reflected parameter injection

Published May 28, 2021 · Updated Sep 16, 2024

Reflected XSS in SysJust CTS Web released 2021.3.25 and earlier allows remote attackers to obtain a user's connection token. Specific web functions return parameter values containing unfiltered special characters, causing the browser to treat attacker-supplied content as executable script. No authentication is required to craft the request, but a user must follow the reflected payload for script execution and token exposure.

CVSS severity4.7
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Reflected XSS in SysJust CTS Web released 2021.3.25 and earlier allows remote attackers to obtain a user's connection token. Specific web functions return parameter values containing unfiltered special characters, causing the browser to treat attacker-supplied content as executable script. No authentication is required to craft the request, but a user must follow the reflected payload for script execution and token exposure.

The record

CVE
CVE-2021-32542
Published
May 28, 2021
Updated
Sep 16, 2024
Vendor
SysJust
Product
CTS Web
Classifications
CWE-79, CAPEC-591, T1539
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <=released 2021.3.25

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SysJust · CTS Webversion=unspecified <=released 2021.3.25

Published CVSS scores

4.7TWCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo