Medium severity · published Jun 26, 2026
CVE-2026-1869
User Registration & Membership <= 5.2.0 - Missing Authorization to Unauthenticated Payment Bypass
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
The User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder plugin for WordPress is vulnerable to unauthorized modification of data due to missing validation checks in the confirm_payment() function in all versions up to, and including, 5.2.0. This makes it possible for unauthenticated attackers to bypass payment processing and activate paid memberships.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
Affected product
UR
User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder
wpeverest
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1869
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1869
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3552000/user-registration
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/9bf5b60b-5a4f-4227-97ac-a952019f46d9?source=cve
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