What’s Vulnerable › Vulnerabilities

CVE-2022-4699: MediaElement.js – HTML5 Video & Audio Player <= 4.2.8 - Contributor+ Stored XSS via Shortcode

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-01-30 · updated 2026-06-17
• Weakness: CWE-79

Description

The MediaElement.js WordPress plugin through 4.2.8 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high-privilege users such as admins.

Affected products

• MediaElement.js: through 4.2.8

References

• https://wpscan.com/vulnerability/e57f38d9-889a-4f82-b20d-3676ccf9c6f9
• https://wpscan.com/vulnerability/e57f38d9-889a-4f82-b20d-3676ccf9c6f9

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