CVE-2026-44373
Medium · 5.3CVSS
5.3
EPSS
0.6%
Published
May 13, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | nitro | 0 | 3.0.260429-beta |
| npm | nitropack | 0 | 2.13.4 |
Related vulnerabilities
- GHSA-5w89-w975-hf9q Nitro has a proxy scope bypass via percent-encoded path traversal in `routeRules` Same vulnerability
- CVE-2026-44372 Nitro is a next generation server toolkit. Also affects nitro
- GHSA-9phm-9p8f-hw5m Nitro has an Open Redirect via Protocol-Relative URL Bypass in Wildcard Route Rules Also affects nitro
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