CVE-2026-73403Network attack vectorHinoki check available

Unauthenticated paid-content access via omitted payment fields

Published Aug 13, 2026 · Updated Aug 13, 2026

Broken access control in WPEverest User Registration & Membership 5.2.6 and earlier allows remote attackers to access paid content without payment. The registration handler trusts client-submitted membership and payment signals, so removing those fields suppresses order creation while leaving an account able to authenticate. Exploitation requires a paid membership form with Payment Before Login enabled and grants access limited to content assigned to the selected membership.

CVSS severity5.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

Broken access control in WPEverest User Registration & Membership 5.2.6 and earlier allows remote attackers to access paid content without payment. The registration handler trusts client-submitted membership and payment signals, so removing those fields suppresses order creation while leaving an account able to authenticate. Exploitation requires a paid membership form with Payment Before Login enabled and grants access limited to content assigned to the selected membership.

The record

CVE
CVE-2026-73403
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
WPEverest
Product
User Registration & Membership
Classifications
CWE-862, CAPEC-180, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=n/a <=5.2.6 changes=[{"at":"5.2.7","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WPEverest · User Registration & Membershipversion=n/a <=5.2.6 changes=[{"at":"5.2.7","status":"unaffected"}]

Published CVSS scores

5.3PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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