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nodejsAnonymousNODEJS:1642
HistoryMar 03, 2021 - 1:55 a.m.

Prefix escape

2021-03-0301:55:12
Anonymous
www.npmjs.com
23
fastify-reply-from
prefix escape
upgrade
cve-2021-21321
security advisory

EPSS

0.003

Percentile

70.7%

Overview

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. Unfortunately, it is.

Recommendation

Upgrade to version 4.0.2

References

EPSS

0.003

Percentile

70.7%