CVE-2020-7642

PoC —

CVSS 3.1

5.4 medium

EPSS

<1%p57

Published

Apr 22, 2020 (Apr 22, 2020)

Modified

Jun 17, 2026

Description

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.

Vendors: lazysizes project
Products: lazysizes
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.9%)

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