GHSA-c4qr-gmr9-v23w
Prefix escape
Quick fix
GHSA-c4qr-gmr9-v23w — fastify-http-proxy: upgrade to the fixed version with the command below.
npm install fastify-http-proxy@4.3.1Details
### Impact
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.
[CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N)
### Patches
All releases after v4.3.1 include the fix.
### Workarounds
There are no workaround available.
### For more information If you have any questions or comments about this advisory: * Open an issue in [fastify-reply-from](https://github.com/fastify/fastify-reply-from) * Email us at [hello@matteocollina.com](mailto:hello@matteocollina.com)
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