Low severity · published Oct 16, 2026
CVE-2026-110039
Smush < 4.3.4 - Admin+ Network-Wide Plugin Settings Update on Multisite
2.7
CVSS
0.2%
EPSS
No
On KEV
Description
The Smush WordPress plugin before 4.3.4 does not restrict changes to a network-wide access setting to network administrators, allowing an administrator of a single site on a multisite network to change it for the entire network.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 10% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SM
Smush ·
before 4.3.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-110039
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-110039
wpscan.com
https://wpscan.com/vulnerability/4f27b2fd-1b27-4274-85c5-f19e6998aa44/
More from Smush
7.2
CVE-2026-19223
Smush < 4.3.2 - Admin+ Network-Wide RCE via Hub Connector on Multisite