CVE-2026-3601

MEDIUM 4.3

User Registration & Membership <= 5.1.4 - Missing Authorization to Authenticated (Contributor+) Limited Page Content Modification

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `embed_form_action()` function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to append shortcode content to arbitrary pages they do not own or have permission to edit.

CWE	CWE-862
Vendor	wpeverest
Product	user registration & membership – free & paid memberships, subscriptions, content restriction, user profile, custom user registration & login builder
Published	May 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

wpeverest / User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder

0 ≤ 5.1.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

Credits

Hunter Jensen