CVE-2021-24471 - CVE House
Back to Database
Status published Medium CVE-2021-24471

YouTube Embed < 5.2.2 - Contributor+ Stored XSS

Vulnerability Description

The YouTube Embed WordPress plugin before 5.2.2 does not validate, escape or sanitise some of its shortcode attributes, leading to Stored XSS issues by 1. using w, h, controls, cc_lang, color, language, start, stop, or style parameter of youtube shortcode, 2. by using style, class, rel, target, width, height, or alt parameter of youtube_thumb shortcode, or 3. by embedding a video whose title or description contains XSS payload (if API key is configured).

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-24471

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • apple502j

Affected Vendor

Affected Software

YouTube Embed
Vulnerable Versions:
5.2.2

Timeline

Official Publish: August 16th, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weaknesses (CWE)