Threat intelligence

User Registration & Membership <= 5.1.2 - Authenticated (Subscriber+) SQL Injection via membership_ids[]

CVE-2026-1865 · user-registration

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run User Registration at a vulnerable version. How SiteRespond intelligence works

Vulnerability: User Registration & Membership <= 5.1.2 - Authenticated (Subscriber+) SQL Injection via membership_ids[]
Affected software: user-registration(Plugin)
Affected versions: ≤ 5.1.2
Authentication: Authenticated (see advisory title)
Vulnerability type: SQL injection
CVE: CVE-2026-1865
Published: 7 April 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to read or modify database contents beyond intended access.
Source: Data imported from Wordfence Intelligence (advisory 07c79459-66b8-4c93-a1cd-6e3ede95643f). Methodology and redistribution notes

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