CVE-2024-49604

Simple User Registration <= 6.7 - Missing Authorization to Account Takeover

2024-10-17 00:00

Strategic Overview

Status: Patched in 6.8
Affected Plugin: MemberHero – Simple User Registration & Login
Affected Version: <= 6.7
CVSS: 9.8Critical
Weakness type: CWE-862 · Missing Authorization
CVE: CVE-2024-49604

View all MemberHero – Simple User Registration & Login vulnerabilities

At a glance

CVE-2024-49604 is a critical-severity Missing Authorization vulnerability in the MemberHero WordPress plugin, affecting versions <= 6.7. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 6.8; sites on affected versions should update now. Disclosed October 2024, reported by stealthcopter.

Vulnerability Overview

The Simple User Registration plugin for WordPress is vulnerable to privilege escalation due to a missing capability check on a function in all versions up to, and including, 6.7. This makes it possible for unauthenticated attackers to takeover other users accounts and elevate their privileges

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-862: Missing Authorization

Reaching this weakness in MemberHero <= 6.7 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For MemberHero the fix is 6.8: builds <= 6.7 are affected, anything from 6.8 onward is not.

Remediation

Update to version 6.8, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: MemberHero 6.8 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2024-49604 https://www.wordfence.com/threat-intel/vulnerabilities/id/169d06e1-055b-422a-a466-155ec43e0dbb https://nvd.nist.gov/vuln/detail/CVE-2024-49604

Related records

Same weakness class

9.1CVE-2024-53810: Simple User Registration <= 5.5 User DeletionCVE-2024-53810

Other vulnerabilities in MemberHero – Simple User Registration & Login

CVSS Vector

9.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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