CVE-2023-51476Network attack vector

Unauthenticated takeover of arbitrary site accounts

Published May 17, 2024 · Updated Apr 28, 2026

Improper privilege management in iOSS WP MLM Unilevel 4.0 and earlier allows remote attackers to take over arbitrary WordPress accounts. The published CNA record and Patchstack advisory do not identify the affected function, request parameter, or missing privilege check. No authentication or user interaction is required, and a successful attack grants control of arbitrary accounts and the affected site.

CVSS severity9.8
Critical
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in iOSS WP MLM Unilevel 4.0 and earlier allows remote attackers to take over arbitrary WordPress accounts. The published CNA record and Patchstack advisory do not identify the affected function, request parameter, or missing privilege check. No authentication or user interaction is required, and a successful attack grants control of arbitrary accounts and the affected site.

The record

CVE
CVE-2023-51476
Published
May 17, 2024
Updated
Apr 28, 2026
Vendor
IOSS
Product
WP MLM Unilevel
Classifications
CWE-269, CAPEC-233
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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 <=4.0
  2. Affected versionversion=n/a <=4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IOSS · WP MLM Unilevelversion=0 <=4.0; version=n/a <=4.0

Published CVSS scores

9.8PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
CAPEC-233Privilege Escalation

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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