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CWE

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CVE-2026-44373

Published: May 13, 2026

Modified: May 14, 2026

PUBLISHED

CVSS v3.1

5.3

MEDIUM

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.

Vendor	Product	Versions
nitrojs	nitro	affected `< 3.0.260429-beta`
nitrojs	nitropack	affected `< 2.13.4`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

References

https://github.com/nitrojs/nitro/security/advisories/GHSA-5w89-w975-hf9q

x_refsource_CONFIRM

https://github.com/nitrojs/nitro/pull/4222

x_refsource_MISC

https://github.com/nitrojs/nitro/pull/4223

x_refsource_MISC

https://github.com/nitrojs/nitro/releases/tag/v2.13.4

x_refsource_MISC

https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta

x_refsource_MISC

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