CVE-2026-88793 PUBLISHED

YouTube Embed 10.0 - 10.3 - Unauthenticated Stored XSS via youram_server

Assigner: WPScan
Reserved: 10.09.2026 Published: 13.09.2026 Updated: 14.09.2026

The YouTube Embed WordPress plugin from 10.0 to 10.3 does not perform any authorisation check on one of its AJAX actions, relying only on a nonce it prints on every front-end page, and does not escape the stored data before rendering it, allowing unauthenticated attackers to store arbitrary web scripts which will execute in the session of any user viewing the affected content, including an administrator.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Product Status

Vendor Unknown
Product YouTube Embed
Versions Default: unknown
  • affected from 10.0 to 10.3 (incl.)

Credits

  • Adem0n__ finder
  • WPScan coordinator

References

Problem Types

  • CWE-79 Cross-Site Scripting (XSS) CWE