CVE-2026-12688Public exploitNetwork attack vector

Unauthenticated membership grant via forged PayPal IPN

Published Jul 24, 2026 · Updated Jul 24, 2026

Improper authorization in Metagauss ProfileGrid before 5.9.9.7 allows remote attackers to grant paid group membership via forged PayPal IPN data. The public group page's IPN action trusts attacker-controlled payment_status and custom fields without PayPal verification, then writes group and payment-status user metadata. Exploitation requires a configured paid group, PayPal settings, and a published group page; it grants membership without payment but does not change the user's WordPress role.

CVSS severity6.5
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper authorization in Metagauss ProfileGrid before 5.9.9.7 allows remote attackers to grant paid group membership via forged PayPal IPN data. The public group page's IPN action trusts attacker-controlled payment_status and custom fields without PayPal verification, then writes group and payment-status user metadata. Exploitation requires a configured paid group, PayPal settings, and a published group page; it grants membership without payment but does not change the user's WordPress role.

The record

CVE
CVE-2026-12688
Published
Jul 24, 2026
Updated
Jul 24, 2026
Vendor
EventPrime Events
Product
ProfileGrid
Classifications
CWE-284, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <5.9.9.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

EventPrime Events · ProfileGridversion=0 <5.9.9.7

Published CVSS scores

6.5WPScanCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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 exploitPublished

Weakness, pattern, technique

CWE-284Improper Access Control
T1098Account Manipulation

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo