CVE-2023-48753Network attack vector

Unauthenticated restriction bypass via spoofed client IP

Published Jun 4, 2024 · Updated Apr 28, 2026

Authentication bypass in 10up Restricted Site Access 7.4.1 and earlier allows remote attackers to bypass IP-based site restrictions. The client-IP lookup trusts forwarding headers without first tying them to an approved proxy, so a crafted header can match an allow-listed address. Exploitation requires an enabled IP allow list containing the spoofed address and a request header that the plugin trusts without an approved proxy.

CVSS severity5.3
Medium
EPSS probability0.35%
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 10up Restricted Site Access 7.4.1 and earlier allows remote attackers to bypass IP-based site restrictions. The client-IP lookup trusts forwarding headers without first tying them to an approved proxy, so a crafted header can match an allow-listed address. Exploitation requires an enabled IP allow list containing the spoofed address and a request header that the plugin trusts without an approved proxy.

The record

CVE
CVE-2023-48753
Published
Jun 4, 2024
Updated
Apr 28, 2026
Vendor
10up
Product
ElasticPress
Classifications
CWE-290, CAPEC-1, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 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=1.0 <=7.4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

10up · ElasticPressversion=1.0 <=7.4.1
10up · Restricted Site Accessversion=n/a <=7.4.1 changes=[{"at":"7.5.0","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-1Accessing Functionality Not Properly Constrained by ACLs
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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