CVE-2026-44373: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in nitrojs nitro
CVE-2026-44373 is a medium severity path traversal vulnerability in the Nitro server toolkit prior to version 3. 0. 260429-beta. An attacker can bypass proxy route rules by sending percent-encoded path traversal sequences (.. %2f) in the URL, causing Nitro to forward requests outside the intended scope. This could lead to unauthorized access to resources outside the configured directory. The issue is fixed starting with version 3. 0. 260429-beta. There are no known exploits in the wild and no official patch advisory provided in the input data.
AI Analysis
Technical Summary
Nitro versions before 3.0.260429-beta contain a path traversal vulnerability (CWE-22) where percent-encoded sequences in URLs allow bypassing proxy route restrictions. This causes Nitro to forward requests to upstream resources outside the configured scope, potentially exposing unauthorized files or directories. The vulnerability has a CVSS 3.1 base score of 5.3 (medium severity) with network attack vector, low attack complexity, no privileges or user interaction required, and limited confidentiality impact. The vulnerability is addressed in version 3.0.260429-beta.
Potential Impact
An attacker can exploit this vulnerability to bypass proxy route rules and access resources outside the intended directory scope. This may lead to unauthorized disclosure of information. There is no indication of integrity or availability impact. No known exploits have been reported in the wild.
Mitigation Recommendations
Upgrade Nitro to version 3.0.260429-beta or later where this vulnerability is fixed. Patch status is not explicitly confirmed in vendor advisories provided, so users should verify with the official Nitro project or vendor for the latest remediation guidance.
CVE-2026-44373: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') in nitrojs nitro
Description
CVE-2026-44373 is a medium severity path traversal vulnerability in the Nitro server toolkit prior to version 3. 0. 260429-beta. An attacker can bypass proxy route rules by sending percent-encoded path traversal sequences (.. %2f) in the URL, causing Nitro to forward requests outside the intended scope. This could lead to unauthorized access to resources outside the configured directory. The issue is fixed starting with version 3. 0. 260429-beta. There are no known exploits in the wild and no official patch advisory provided in the input data.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Nitro versions before 3.0.260429-beta contain a path traversal vulnerability (CWE-22) where percent-encoded sequences in URLs allow bypassing proxy route restrictions. This causes Nitro to forward requests to upstream resources outside the configured scope, potentially exposing unauthorized files or directories. The vulnerability has a CVSS 3.1 base score of 5.3 (medium severity) with network attack vector, low attack complexity, no privileges or user interaction required, and limited confidentiality impact. The vulnerability is addressed in version 3.0.260429-beta.
Potential Impact
An attacker can exploit this vulnerability to bypass proxy route rules and access resources outside the intended directory scope. This may lead to unauthorized disclosure of information. There is no indication of integrity or availability impact. No known exploits have been reported in the wild.
Mitigation Recommendations
Upgrade Nitro to version 3.0.260429-beta or later where this vulnerability is fixed. Patch status is not explicitly confirmed in vendor advisories provided, so users should verify with the official Nitro project or vendor for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-05T20:15:20.631Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a04e7d1cbff5d86100a8500
Added to database: 5/13/2026, 9:06:25 PM
Last enriched: 5/13/2026, 9:22:29 PM
Last updated: 5/13/2026, 10:10:58 PM
Views: 3
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