Description
Nitro is a next generation server toolkit. Prior to 3.0.260429-beta, an attacker could bypass a proxy route rule by sending percent-encoded path traversal (..%2f) in the URL, causing Nitro to forward a request that the upstream resolved outside the configured scope. This vulnerability is fixed in 3.0.260429-beta.
Affected products
nitro: nitro
References5
- github.com/nitrojs/nitro/pull/4222 Issue TrackingPatch
- github.com/nitrojs/nitro/pull/4223 Issue TrackingPatch
- github.com/nitrojs/nitro/releases/tag/v2.13.4 Release Notes
- github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta Release Notes
- github.com/nitrojs/nitro/security/advisories/GHSA-5w89-w975-hf9q Third Party Advisory
Metrics
- CVSS 3.1
-
5.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 40 · as of 14 November 2026
- CWE
- CWE-22
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.