CVE-2023-40944Public exploitNetwork attack vector

Database record modification via second-order SQL injection

Published Sep 11, 2023 · Updated Sep 26, 2024

Second-order SQL injection in Schoolmate 1.3 allows remote attackers to modify database records through a crafted school name. The header.php update path stores the submitted schoolname after HTML encoding, then later embeds the retrieved value directly in an UPDATE statement without SQL parameterization. Network access is sufficient under NVD's unauthenticated assessment, and a crafted stored value can broaden the UPDATE to alter every schoolinfo row.

CVSS severity9.8
Critical
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Second-order SQL injection in Schoolmate 1.3 allows remote attackers to modify database records through a crafted school name. The header.php update path stores the submitted schoolname after HTML encoding, then later embeds the retrieved value directly in an UPDATE statement without SQL parameterization. Network access is sufficient under NVD's unauthenticated assessment, and a crafted stored value can broaden the UPDATE to alter every schoolinfo row.

The record

CVE
CVE-2023-40944
Published
Sep 11, 2023
Updated
Sep 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 11, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 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 privilegesunauthenticated

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
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

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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