GHSA-qhxp-v273-g94h

sanitize-html is vulnerable to XSS through incomprehensive sanitization

Source: GitHub Advisory Database (reviewed) Moderate CVE-2019-25225

Packages

Ecosystem	Package	Affected	Fixed in
npm	sanitize-html	< 2.0.0-beta	2.0.0-beta

Details

As written in the advisory (Markdown source, shown as plain text).

`sanitize-html` prior to version 2.0.0-beta is vulnerable to Cross-site Scripting (XSS). The `sanitizeHtml()` function in `index.js` does not sanitize content when using the custom `transformTags` option, which is intended to convert attribute values into text. As a result, malicious input can be transformed into executable code.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2019-25225 advisory
https://github.com/apostrophecms/sanitize-html/issues/293 web
https://github.com/apostrophecms/sanitize-html/pull/156 web
https://github.com/apostrophecms/sanitize-html/commit/712cb6895825c8bb6ede71a16b42bade42abcaf3 web
https://github.com/Checkmarx/Vulnerabilities-Proofs-of-Concept/tree/main/2019/CVE-2019-25225 web
https://github.com/apostrophecms/sanitize-html package