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CVE-2021-23414

22
FAUCET Score

CVE-2021-23414 is a cross-site scripting (XSS) vulnerability affecting video.js versions prior to 7.14.3, where the src attribute of a track tag can bypass HTML escaping to execute arbitrary code. Rated Medium severity (CVSS 6.1), it requires user interaction and a network attack vector, potentially leading to limited impact on confidentiality and integrity. While there is no evidence of active exploitation, public exploit code, or KEV listing, the vulnerability has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.14.3CPE matchmatch criteria
cpe:2.3:a:videojs:video.js:*:*:*:*:*:node.js:*:*
35CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
36CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
37CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.59%
Probability of exploitation in next 30 days
EPSS Percentile
83.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0259 is in the 92nd percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: video.jsFixed in: 7.14.3

Vendor Advisories (1)

npmGHSA-pp7m-6j83-m7r6medium

Cross-site Scripting in video.js

Aug 10, 2021

References

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