CVE-2024-21746Network attack vector

Review-limit bypass via spoofed client IP

Published May 17, 2024 · Updated Apr 29, 2026

Authentication bypass in Roxnor WP Ultimate Review 2.3.6 and earlier allows remote attackers to evade IP-based review limits. The client-IP lookup accepts user-controlled HTTP forwarding headers as the reviewer's address without establishing that a trusted proxy supplied them. No account or user interaction is required; changing the supplied address permits repeated review submissions despite the configured per-IP restriction.

CVSS severity5.3
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Roxnor WP Ultimate Review 2.3.6 and earlier allows remote attackers to evade IP-based review limits. The client-IP lookup accepts user-controlled HTTP forwarding headers as the reviewer's address without establishing that a trusted proxy supplied them. No account or user interaction is required; changing the supplied address permits repeated review submissions despite the configured per-IP restriction.

The record

CVE
CVE-2024-21746
Published
May 17, 2024
Updated
Apr 29, 2026
Vendor
Roxnor
Product
WP Ultimate Review
Classifications
CWE-290, CAPEC-151
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 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 <=2.3.6 changes=[{"at":"2.3.7","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Roxnor · WP Ultimate Reviewversion=0 <=2.3.6 changes=[{"at":"2.3.7","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-290Authentication Bypass by Spoofing
CAPEC-151Identity Spoofing

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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