CVE-2023-2888Public exploitNetwork attack vector

Remote code execution via unrestricted file upload

Published May 25, 2023 · Updated Jan 16, 2025

Unrestricted file upload in PHPok 6.4.100 allows remote authenticated users to execute arbitrary code via a crafted PHP file. The f=zip route passes ZIP input to upload handling without screening archive contents, so embedded PHP is extracted into a web-accessible location. Access to administrative upload functionality is required; successful exploitation permits server-side code execution with the web service's privileges.

CVSS severity4.7
Medium
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in PHPok 6.4.100 allows remote authenticated users to execute arbitrary code via a crafted PHP file. The f=zip route passes ZIP input to upload handling without screening archive contents, so embedded PHP is extracted into a web-accessible location. Access to administrative upload functionality is required; successful exploitation permits server-side code execution with the web service's privileges.

The record

CVE
CVE-2023-2888
Published
May 25, 2023
Updated
Jan 16, 2025
Vendor
PHPok
Product
PHPok
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 2025Record 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=6.4.100

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

PHPok · PHPokversion=6.4.100

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

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.

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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 exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Web Shell

Public exploit references

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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