GHSA-hg2p-2cvq-4ppv

Cross-site scripting in lazysizes

Source: GitHub Advisory Database (reviewed) Moderate CVE-2020-7642

Packages

Ecosystem	Package	Affected	Fixed in
npm	lazysizes	< 5.2.1	5.2.1

Details

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

lazysizes through 5.2.0 allows execution of malicious JavaScript. The following attributes are not sanitized by the video-embed plugin: `data-vimeo`, `data-vimeoparams`, `data-youtube` and `data-ytparams` which can be abused to inject malicious JavaScript.

References

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

https://nvd.nist.gov/vuln/detail/CVE-2020-7642 advisory
https://github.com/aFarkas/lazysizes/commit/3720ab8262552d4e063a38d8492f9490a231fd48 web
https://snyk.io/vuln/SNYK-JS-LAZYSIZES-567144 web