Low severity · published Sep 13, 2026
CVE-2026-86407
User Registration & Membership < 5.2.8 - Unauthenticated User Data Disclosure via Membership Thank You Page
3.7
CVSS
0.3%
EPSS
No
On KEV
Description
The User Registration & Membership WordPress plugin before 5.2.8 does not verify that the visitor requesting its membership confirmation page owns the account named in the request, nor that any registration or purchase has taken place, allowing unauthenticated users to retrieve another user's email address, profile fields, role and membership order details. Exploitation requires the site owner to have added a user smart tag to that page's configurable message, which the shipped default does not contain.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UR
User Registration & Membership ·
5.0 before 5.2.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-86407
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-86407
wpscan.com
https://wpscan.com/vulnerability/2c9eb1fe-4e18-4fd0-9581-5672ffc4b598/
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