CVE-2023-31941Public exploitNetwork attack vector

Authenticated code execution via unrestricted PHP upload

Published Aug 17, 2023 · Updated Oct 8, 2024

Unrestricted file upload in Online Travel Agency System 1.0 allows remote authenticated users to execute PHP code through employee_insert.php. The handler appends the client-supplied filename to the user directory and passes the temporary file to move_uploaded_file without filtering its name or type. An authenticated administrator can place a PHP payload in the web-accessible admin/user directory and invoke it with the web server's privileges.

CVSS severity7.2
High
EPSS probability1.47%
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 Online Travel Agency System 1.0 allows remote authenticated users to execute PHP code through employee_insert.php. The handler appends the client-supplied filename to the user directory and passes the temporary file to move_uploaded_file without filtering its name or type. An authenticated administrator can place a PHP payload in the web-accessible admin/user directory and invoke it with the web server's privileges.

The record

CVE
CVE-2023-31941
Published
Aug 17, 2023
Updated
Oct 8, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1505.003Server Software Component: Web 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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