CVE-2026-77826

RegistrationMagic <= 6.0.9.8 - Authentication Bypass

2026-09-03 00:00

Strategic Overview

Status: Patched in 6.0.9.9
Affected Plugin: RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
Affected Version: <= 6.0.9.8
CVSS: 9.8Critical
Weakness type: CWE-288 · Authentication Bypass Using an Alternate Path or Channel
CVE: CVE-2026-77826

View all RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login vulnerabilities

At a glance

CVE-2026-77826 is a critical-severity Authentication Bypass Using an Alternate Path or Channel vulnerability in the RegistrationMagic WordPress plugin, affecting versions <= 6.0.9.8. 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 6.0.9.9; sites on affected versions should update now. Disclosed September 2026, reported by Mutantgun.

Vulnerability Overview

The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 6.0.9.8. This makes it possible for unauthenticated attackers to bypass authentication.

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-288: Authentication Bypass Using an Alternate Path or Channel

Reaching this weakness in RegistrationMagic <= 6.0.9.8 takes a caller who can reach the endpoint. Authentication bypass through an alternate path means the application has a second route to a protected action that skips the checks the primary route performs.

The protection on the main path becomes irrelevant, because the attacker simply uses the route that never asks. For RegistrationMagic the fix is 6.0.9.9: builds <= 6.0.9.8 are affected, anything from 6.0.9.9 onward is not.

Remediation

Update to version 6.0.9.9, 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: RegistrationMagic 6.0.9.9 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-77826 https://www.wordfence.com/threat-intel/vulnerabilities/id/b9f75a13-76be-45b5-8ec3-a89cbb6e0256 https://nvd.nist.gov/vuln/detail/CVE-2026-77826

Related records

Same weakness class

9.8CVE-2023-2499: RegistrationMagic <= 5.2.1.0 Authentication BypassCVE-2023-2499

Other vulnerabilities in RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User 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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