WordPress
CVE-2026-2356
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
2DescriptionCVE.org
The User Registration & Membership - Custom Registration Form, Login Form, and User Profile plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.1.2 via the 'register_member' function, due to missing validation on the 'member_id' user controlled key. This makes it possible for unauthenticated attackers to delete arbitrary user accounts that newly registered on the site who has the 'urm_user_just_created' user meta set.
AnalysisAI
Unauthenticated attackers can delete arbitrary user accounts on WordPress sites running the User Registration & Membership plugin through version 5.1.2 due to insufficient validation of the member_id parameter in the register_member function. This IDOR vulnerability specifically targets newly registered accounts marked with the urm_user_just_created meta flag. No patch is currently available.
Technical ContextAI
Classified as CWE-284 (Improper Access Control). Affects and User Profile. The User Registration & Membership – Custom Registration Form, Login Form, and User Profile plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.1.2 via the 'register_member' function, due to missing validation on the 'member_id' user controlled key. This makes it possible for unauthenticated attackers to delete arbitrary user accounts that newly registered on the site who has the 'urm_user_just_created' user meta set.
Affected ProductsAI
Product: and User Profile. Versions: up to 5.1.2.
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
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Same weakness CWE-284 – Improper Access Control
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External POC / Exploit Code
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