High severity · published Aug 1, 2026
CVE-2026-15368
Profile Builder < 3.16.4 - Unauthenticated Account Takeover via Auto-Login After Registration
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
The User Profile Builder WordPress plugin before 3.16.4 does not correctly bind the automatic login performed after user registration to the newly created account, allowing unauthenticated attackers to obtain an authenticated session for an arbitrary existing user, including administrators, on sites using a supported but non-default configuration.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UP
User Profile Builder ·
before 3.16.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15368
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15368
wpscan.com
https://wpscan.com/vulnerability/df1eb738-15bf-4f8b-aa06-e0a42f1e9c2e/
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