CVE-2023-4480Network attack vector

Authenticated file read and write via traversal

Published Sep 5, 2023 · Updated Sep 26, 2024

Path traversal in PHPFusion 9.10.30 and earlier allows remote authenticated users to read files and write validated file types. The Fusion File Manager's outdated dependency accepts traversal sequences in crafted HTTP requests and resolves known absolute paths outside the intended directory. Administrator or Super Administrator access is required; reads inherit the web process's permissions, while writes remain limited by MIME-type and extension validation.

CVSS severity5.5
Medium
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in PHPFusion 9.10.30 and earlier allows remote authenticated users to read files and write validated file types. The Fusion File Manager's outdated dependency accepts traversal sequences in crafted HTTP requests and resolves known absolute paths outside the intended directory. Administrator or Super Administrator access is required; reads inherit the web process's permissions, while writes remain limited by MIME-type and extension validation.

The record

CVE
CVE-2023-4480
Published
Sep 5, 2023
Updated
Sep 26, 2024
Vendor
PHPFusion
Product
PHPFusion
Classifications
CWE-22, CWE-538, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 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 privilegesadmin

What is affected?

PHPFusion · PHPFusionversion=0 <=9.10.30

Published CVSS scores

5.5SynopsysCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
5.5NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-538Insertion of Sensitive Information into Externally-Accessible File or Directory
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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