YouTube Embed <= 5.2.1 - Contributor+ Stored Cross-Site Scripting

2021-07-19 00:00

apple502j

Strategic Overview

Status

Patched in 5.2.2

Affected PluginEmbeds for YouTube

Affected Version<= 5.2.1

CVSS6.4Medium

CVECVE-2021-24471

View all Embeds for YouTube vulnerabilities

Vulnerability Overview

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).

Technical Analysis

REMEDIATION: Update to version 5.2.2, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2021-24471 https://www.wordfence.com/threat-intel/vulnerabilities/id/483564f8-6308-4913-82e2-78d69aebb6dd

CVSS Vector

6.4

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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