What’s Vulnerable › Vulnerabilities

CVE-2021-23414: Cross-site Scripting (XSS)

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-07-28 · updated 2026-06-17
• Weakness: CWE-79

Description

This affects the package video.js before 7.14.3. The src attribute of track tag allows to bypass HTML escaping and execute arbitrary code.

Affected products

• Fedoraproject Fedora: 35, 36, 37
• Videojs Video.Js: before 7.14.3 — fixed in 7.14.3

How to fix

Upgrade to a fixed version: Videojs Video.Js 7.14.3. Check the vendor advisory for mitigations.

References

• https://github.com/videojs/video.js/commit/b3acf663641fca0f7a966525a72845af7ec5fab2
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DHYIIAUXUBHMBEDYU7TYNZXEN2W2SA2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/74SXNGA5RIWM7QNX7H3G7SYIQLP4UUGV/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NLRJB5JNKK3VVBLV3NH3RI7COEDAXSAB/
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1533588
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1533587
• https://snyk.io/vuln/SNYK-JS-VIDEOJS-1533429
• https://github.com/videojs/video.js/commit/b3acf663641fca0f7a966525a72845af7ec5fab2
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DHYIIAUXUBHMBEDYU7TYNZXEN2W2SA2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/74SXNGA5RIWM7QNX7H3G7SYIQLP4UUGV/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NLRJB5JNKK3VVBLV3NH3RI7COEDAXSAB/
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1533588

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