Unauthorized Script Execution in YouTube Embed Plugin for WordPress
CVE-2026-88793

8.8HIGH

Key Information:

Vendor

WordPress
Status
Youtube Embed
Vendor
CVE Published:
13 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-88793?

The YouTube Embed plugin for WordPress versions 10.0 to 10.3 is susceptible to an authorization bypass flaw, enabling unauthenticated attackers to execute arbitrary web scripts via an inadequately secured AJAX action. This vulnerability allows attackers to store malicious scripts, which can be executed in the context of any user accessing the affected content, including administrative users. The issue arises from the plugin’s reliance on a nonce for front-end protection and its failure to properly escape stored data before rendering it.

Affected Version(s)

YouTube Embed 10.0 <= 10.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-88793 - Proof of Concept

References

https://wpscan.com/vulnerability/7f695b0c-5dbc-4f3e-9b3f-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Adem0n__
WPScan
.