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Vulnerability of Node.js helmet-csp: Cross Site Scripting via CSP Override

Synthesis of the vulnerability

An attacker can trigger a Cross Site Scripting via CSP Override of Node.js helmet-csp, in order to run JavaScript code in the context of the web site.
Severity of this announce: 2/4.
Creation date: 30/09/2019.
Références of this computer vulnerability: NPM-1176, VIGILANCE-VUL-30475.

Description of the vulnerability

An attacker can trigger a Cross Site Scripting via CSP Override of Node.js helmet-csp, in order to run JavaScript code in the context of the web site.
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This computer threat bulletin impacts software or systems such as Nodejs Modules ~ not comprehensive.

Our Vigil@nce team determined that the severity of this security threat is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this computer vulnerability alert.

Solutions for this threat

Node.js helmet-csp: version 2.9.1.
The version 2.9.1 is fixed:
  https://www.npmjs.com/package/helmet-csp
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