High severity · published Aug 27, 2026
CVE-2026-19223
Smush < 4.3.2 - Admin+ Network-Wide RCE via Hub Connector on Multisite
7.2
CVSS
0.7%
EPSS
No
On KEV
Description
The Smush WordPress plugin before 4.3.2 does not restrict a network-wide setting to network administrators, allowing an administrator of any single site on a multisite network to execute arbitrary code across the entire network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SM
Smush ·
3.22.1 before 4.3.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19223
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19223
wpscan.com
https://wpscan.com/vulnerability/77187a44-9850-4b7e-a6c2-84de660f46a3/
More from Smush
2.7
CVE-2026-110039
Smush < 4.3.4 - Admin+ Network-Wide Plugin Settings Update on Multisite