Arbitrary Code Execution Vulnerability in Smush Plugin for WordPress
CVE-2026-19223
7.2HIGH
Key Information:
Badges
👾 Exploit Exists🟡 Public PoC
What is CVE-2026-19223?
The Smush plugin for WordPress, prior to version 4.3.2, is susceptible to a security flaw that enables an administrator of any individual site within a multisite network to execute arbitrary code across the entire network. This flaw arises from insufficient restrictions placed on network-wide settings, posing significant risks to the integrity and security of affected sites.
Affected Version(s)
Smush 3.22.1 < 4.3.2
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.
References
CVSS V3.1
Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved
Credit
Jakub Herman
WPScan