What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-26 · updated 2026-06-17
• Weakness: CWE-74

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.

Affected products

• DIYgod RSSHub: before 2021-01-25 — fixed in 2021-01-25

How to fix

Upgrade to a fixed version: DIYgod RSSHub 2021-01-25. Check the vendor advisory for mitigations.

References

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

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