High severity · published Aug 5, 2026
CVE-2026-16736
User Registration & Membership < 5.2.6 - Unauthenticated Account Creation While Registration Disabled
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
The User Registration & Membership WordPress plugin before 5.2.6 does not enforce the site's registration-disabled setting when processing registration-form submissions, allowing unauthenticated users to create new accounts even when the administrator has turned off open registration.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UR
User Registration & Membership ·
before 5.2.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16736
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16736
wpscan.com
https://wpscan.com/vulnerability/dc0d63d6-bcd9-4f14-865a-49d254a831a2/
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