What’s Vulnerable › Vulnerabilities

CVE-2020-7642

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-04-22 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• lazysizes: through 5.2.0

References

• https://github.com/aFarkas/lazysizes/commit/3720ab8262552d4e063a38d8492f9490a231fd48
• https://snyk.io/vuln/SNYK-JS-LAZYSIZES-567144
• https://github.com/aFarkas/lazysizes/commit/3720ab8262552d4e063a38d8492f9490a231fd48
• https://snyk.io/vuln/SNYK-JS-LAZYSIZES-567144

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