CVE-2023-30246Public exploitNetwork attack vector

Unauthenticated SQL execution via contestant_id injection

Published May 12, 2023 · Updated Jan 24, 2025

SQL injection in Judging Management System 1.0 allows remote attackers to execute arbitrary SQL via the contestant_id parameter. The edit_contestant_txtcode.php endpoint treats contestant_id as SQL syntax, allowing a UNION SELECT payload to return database-derived values. No privileges or user interaction are required; the demonstrated consequence is database disclosure, while the CVE record reports arbitrary code execution.

CVSS severity9.8
Critical
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Judging Management System 1.0 allows remote attackers to execute arbitrary SQL via the contestant_id parameter. The edit_contestant_txtcode.php endpoint treats contestant_id as SQL syntax, allowing a UNION SELECT payload to return database-derived values. No privileges or user interaction are required; the demonstrated consequence is database disclosure, while the CVE record reports arbitrary code execution.

The record

CVE
CVE-2023-30246
Published
May 12, 2023
Updated
Jan 24, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 24, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8CISA-ADPCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

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Technologies

Your stack

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Your stack

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