CVE-2023-50104Public exploitNetwork attack vector

Authenticated code execution via unescaped backup table name

Published Dec 28, 2023 · Updated Aug 2, 2024

Code injection in ZZCMS 2023 allows remote authenticated users to execute arbitrary PHP through the database-backup workflow. The backup module's phonebak.php copies the unescaped tablename parameter into generated PHP content and permits that content to be saved as config.php. Administrative access to the backup interface is required; successful exploitation installs a web shell with the web server's privileges.

CVSS severity9.8
Critical
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in ZZCMS 2023 allows remote authenticated users to execute arbitrary PHP through the database-backup workflow. The backup module's phonebak.php copies the unescaped tablename parameter into generated PHP content and permits that content to be saved as config.php. Administrative access to the backup interface is required; successful exploitation installs a web shell with the web server's privileges.

The record

CVE
CVE-2023-50104
Published
Dec 28, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 28, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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