CVE-2023-2453Network attack vector

Authenticated PHP execution via tainted require_once path

Published Sep 5, 2023 · Updated Sep 27, 2024

Local file inclusion in PHPFusion 9.10.30 and earlier allows remote authenticated users to execute PHP files through Forum Infusion. The endpoint concatenates a traversal-bearing filename directly into a filesystem path passed to require_once without sufficient sanitization. Member access is sufficient, but code execution also requires a crafted .php payload at a known absolute path, and PHPFusion provides no known upload route for it.

CVSS severity8.8
High
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local file inclusion in PHPFusion 9.10.30 and earlier allows remote authenticated users to execute PHP files through Forum Infusion. The endpoint concatenates a traversal-bearing filename directly into a filesystem path passed to require_once without sufficient sanitization. Member access is sufficient, but code execution also requires a crafted .php payload at a known absolute path, and PHPFusion provides no known upload route for it.

The record

CVE
CVE-2023-2453
Published
Sep 5, 2023
Updated
Sep 27, 2024
Vendor
PHPFusion
Product
PHPFusion
Classifications
CWE-829, CAPEC-252, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 27, 2024Record 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 <=9.10.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PHPFusion · PHPFusionversion=0 <=9.10.30

Published CVSS scores

8.8SynopsysCVSS:3.1/AV:N/AC:L/PR:L/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 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-829Inclusion of Functionality from Untrusted Control Sphere
CAPEC-252PHP Local File Inclusion
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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