CVE-2021-21321 — Prefix escape
fastify-reply-from is an npm package which is a fastify plugin to forward the current http request to another server. In fastify-reply-from before version 4.0.2, by crafting a s…
Published: 2021-03-02 · CVSS: 10.0 · CVSS 3.1
fastify-reply-from is an npm package which is a fastify plugin to forward the current http request to another server. In fastify-reply-from before version 4.0.2, by crafting a specific URL, it is possible to escape the prefix of the proxied backend service. If the base url of the proxied server is "/pub/", a user expect that accessing "/priv" on the target service would not be possible. In affected versions, it is possible. This is fixed in version 4.0.2.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7