CVE-2025-11149
JavaScript vulnerability analysis and mitigation

Overview

CVE-2025-11149 affects all versions of the node-static package and @nubosoftware/node-static package. The vulnerability was discovered and disclosed on September 30, 2025, and is related to the package's failure to properly handle null bytes in user input (NVD).

Technical details

The vulnerability is classified as a Denial of Service (DoS) issue with a CVSS v3.1 base score of 7.5 (HIGH). The vulnerability is tracked under CWE-400 (Uncontrolled Resource Consumption). The technical root cause stems from the package's failure to catch exceptions when processing user input containing null bytes (Snyk).

Impact

When exploited, this vulnerability allows attackers to crash the server by accessing http://host/%00. The attack results in a total loss of availability, causing the system to become completely unavailable to legitimate users (Snyk).

Mitigation and workarounds

A fix has been pushed to the master branch of the project but has not yet been published as a new version. The fix involves implementing proper exception handling for null byte inputs (GitHub Commit).

Additional resources


SourceThis report was generated using AI

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