CVE-2023-48966Public exploitNetwork attack vector

Authenticated code execution via traversal-based file upload

Published Dec 4, 2023 · Updated Aug 2, 2024

Arbitrary file upload in ThinkAdmin 6.1.53 allows remote authenticated users to execute arbitrary code through a crafted ZIP upload. The /admin/api.upload/file handler accepts attacker-controlled key values containing traversal sequences and stores uploaded content under the requested names, enabling placement of a ZIP web shell and a .user.ini auto_prepend_file directive for PHP execution. A valid backend session and an upload configuration permitting the necessary file extensions are required; successful exploitation grants execution in the web server context.

CVSS severity8.8
High
EPSS probability1.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in ThinkAdmin 6.1.53 allows remote authenticated users to execute arbitrary code through a crafted ZIP upload. The /admin/api.upload/file handler accepts attacker-controlled key values containing traversal sequences and stores uploaded content under the requested names, enabling placement of a ZIP web shell and a .user.ini auto_prepend_file directive for PHP execution. A valid backend session and an upload configuration permitting the necessary file extensions are required; successful exploitation grants execution in the web server context.

The record

CVE
CVE-2023-48966
Published
Dec 4, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS: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.

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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
T1190Exploit Public-Facing Application

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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