CVE-2023-31038Network attack vector

SQL injection via unescaped ODBC log fields

Published May 8, 2023 · Updated Oct 15, 2024

SQL injection in Apache Log4cxx 0.9.0 through 1.0.0 allows remote authenticated users to execute SQL through logged input. ODBCAppender interpolates log fields into its configured SQL statement without escaping or parameter binding. Exploitation requires ODBC support, an enabled ODBCAppender, and attacker-controlled data reaching a log event; resulting database actions are limited by the appender account.

CVSS severity8.8
High
EPSS probability1.60%
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 Apache Log4cxx 0.9.0 through 1.0.0 allows remote authenticated users to execute SQL through logged input. ODBCAppender interpolates log fields into its configured SQL statement without escaping or parameter binding. Exploitation requires ODBC support, an enabled ODBCAppender, and attacker-controlled data reaching a log event; resulting database actions are limited by the appender account.

The record

CVE
CVE-2023-31038
Published
May 8, 2023
Updated
Oct 15, 2024
Vendor
The Apache Software Foundation
Product
Apache Log4cxx
Classifications
CWE-89
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.9.0 <1.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Log4cxxversion=0.9.0 <1.1.0

Published CVSS scores

8.8NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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