CVE-2021-24419: The WP YouTube Lyte WordPress plugin before 1.7.16 did not sanitise or escape its lyte_yt_api_key and lyte_not

Q: How do I fix CVE-2021-24419?

wp youtube lyte: upgrade to 1.7.16. Exact commands for each OS are on this page.

Q: Is CVE-2021-24419 being exploited?

CVE-2021-24419 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-24419 affect?

CVE-2021-24419 affects wp youtube lyte. Severity is medium (CVSS 4.8). The WP YouTube Lyte WordPress plugin before 1.7.16 did not sanitise or escape its lyte_yt_api_key and lyte_notification settings before outputting them back in the page, allowing high privilege users to set XSS payload on them and leading t

Q: How urgent is CVE-2021-24419?

Priority 34/100. Public exploit reference

Routine

MEDIUM 4.8UPGRADE

CVE-2021-24419 is a medium-severity flaw (CVSS 4.8) affecting wp youtube lyte. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The WP YouTube Lyte WordPress plugin before 1.7.16 did not sanitise or escape its lyte_yt_api_key and lyte_notification settings before outputting them back in the page, allowing high privilege users to set XSS payload on them and leading to stored Cross-Site Scripting issues.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.8 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-79
Published	2021-07-12
Last modified	2026-06-17

Publisher (CNA): WPScan · Vendor: wp youtube lyte project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-07-12 20:15 UTCPublished CVE record published
2026-06-17 03:39 UTCUpdated Record last modified

wp youtube lyte project wp youtube lyte UPGRADE

Affected: < 1.7.16

Fixed in: 1.7.16

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy wp-youtube-lyte || rpm -q wp-youtube-lyte || wp-youtube-lyte --version

2. UPGRADE to 1.7.16 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade wp-youtube-lyte

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade wp-youtube-lyte

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-24419?

wp youtube lyte: upgrade to 1.7.16. Exact commands for each OS are on this page.

Is CVE-2021-24419 being exploited?

CVE-2021-24419 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-24419 affect?

CVE-2021-24419 affects wp youtube lyte. Severity is medium (CVSS 4.8). The WP YouTube Lyte WordPress plugin before 1.7.16 did not sanitise or escape its lyte_yt_api_key and lyte_notification settings before outputting them back in the page, allowing high privilege users to set XSS payload on them and leading t

How urgent is CVE-2021-24419?

Priority 34/100. Public exploit reference

Software pages

WordPress vulnerabilities

References

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