CVE-2026-44373 MEDIUM

CVE-2026-44373: Nitro: Proxy scope bypass via percent-encoded path traversal in `routeRules`

Vendor Nitrojs
Product nitro
Weakness CWE-22 · Path traversal
Published May 13, 2026
Last update May 14, 2026
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 13, 2026 CVE published
May 14, 2026 Record updated