CVE-2026-44373 | THREATINT

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.

PUBLISHED Reserved 2026-05-05 | Published 2026-05-13 | Updated 2026-05-14 | Assigner GitHub_M

MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

< 3.0.260429-beta

affected

< 2.13.4

affected

References

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

github.com/nitrojs/nitro/pull/4222

github.com/nitrojs/nitro/pull/4223

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

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

cve.org (CVE-2026-44373)

nvd.nist.gov (CVE-2026-44373)

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