GHSA-c4qr-gmr9-v23w
Prefix escape
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | fastify-http-proxy | < 4.3.1 | 4.3.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
### 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 [[email protected]](mailto:[email protected])
References
External links from the advisory. They lead to third-party sites.