CVE-2021-21278: Rsshub

Critical severity, CVSS 9.8. EPSS: 1.6% chance of exploitation in the next 30 days.

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

• Rsshub Rsshub: before 2021-01-25 (fixed in 2021-01-25)

Published 2021-01-26. Last modified 2026-06-17.