CVE-2026-4609Network attack vector

Restricted-group joining via unchecked invitation handler

Published May 13, 2026 · Updated May 13, 2026

Missing authorization in Metagauss ProfileGrid 5.9.8.4 and earlier allows remote authenticated users to join restricted groups. The pm_invite_user handler performs requested membership additions without checking whether the caller can invite the selected account to the chosen group. Subscriber-level access is sufficient to add any registered account to closed or paid groups, bypassing approval and payment gates.

CVSS severity7.1
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Metagauss ProfileGrid 5.9.8.4 and earlier allows remote authenticated users to join restricted groups. The pm_invite_user handler performs requested membership additions without checking whether the caller can invite the selected account to the chosen group. Subscriber-level access is sufficient to add any registered account to closed or paid groups, bypassing approval and payment gates.

The record

CVE
CVE-2026-4609
Published
May 13, 2026
Updated
May 13, 2026
Vendor
EventPrime Events
Product
ProfileGrid
Classifications
CWE-862, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 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=0 <=5.9.8.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

EventPrime Events · ProfileGridversion=0 <=5.9.8.4

Published CVSS scores

7.1WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1098Account Manipulation

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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