CVE-2026-44373

MEDIUM EPSS 31.0%
Published May 13, 20261mo ago · Modified Jun 17, 20262w ago
5.3 CVSS 3.1
Medium
Find Similar
Published May 13, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.3
Exploitability
3.9
Impact
1.4
Vector string
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

Threat Intelligence

EPSS Exploit Probability
31.0% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-22 Path Traversal Resource Mgmt

Affected Products 2

VendorProductVersionRange
nitronitro* <2.13.4
nitronitro*>2.13.4  –  <3.0.260429

References 5

  • github.com https://github.com/nitrojs/nitro/pull/4222
    Issue TrackingPatch
  • github.com https://github.com/nitrojs/nitro/pull/4223
    Issue TrackingPatch
  • github.com https://github.com/nitrojs/nitro/releases/tag/v2.13.4
    Release Notes
  • github.com https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta
    Release Notes
  • github.com https://github.com/nitrojs/nitro/security/advisories/GHSA-5w89-w975-hf9q
    Third Party Advisory

Remediation

  • github.com https://github.com/nitrojs/nitro/pull/4222
    Issue TrackingPatch
  • github.com https://github.com/nitrojs/nitro/pull/4223
    Issue TrackingPatch