What is GHSA-w4vp-3mq7-7v82?

GHSA-w4vp-3mq7-7v82 is a security advisory published by GitHub Security Advisories with High severity. Cross-Site Scripting in lazysizes

Why does GHSA-w4vp-3mq7-7v82 have no CVE ID yet?

GitHub Security Advisories published this advisory directly to customers before NVD assigned a CVE ID. This is the embargo-window disclosure pattern — vendors notify customers on day 0; NVD's public record follows days to weeks later.

Which products are affected by GHSA-w4vp-3mq7-7v82?

GHSA-w4vp-3mq7-7v82 affects 1 product, including: npm/lazysizes:\u003c= 5.2.1-rc0.

GHSA-w4vp-3mq7-7v82HighDisclosed before NVD

Cross-Site Scripting in lazysizes

Vendor

GitHub Security Advisories

Published

September 3, 2020

Last Modified

January 9, 2023

📋 Description

Versions of lazysizes prior to 5.2.1-rc1 are vulnerable to Cross-Site Scripting. The video-embed plugin fails to sanitize the following attributes: data-vimeo, data-vimeoparams, data-youtube and data-ytparams. This allows attackers to execute arbitrary JavaScript in a victim's browser if the attacker has control over the vulnerable attributes.

Recommendation

Upgrade to version 5.2.1-rc1 or later.

🎯 Affected products1

npm/lazysizes:<= 5.2.1-rc0

🔗 References (3)

https://github.com/aFarkas/lazysizes/issues/764
https://www.npmjs.com/advisories/1493
https://github.com/advisories/GHSA-w4vp-3mq7-7v82