CVE-2026-44172Network attack vector

SQL injection via incorrect Big5 escaping

Published Jun 12, 2026 · Updated Jun 12, 2026

SQL injection in MariaDB Connector/C 3.3.18 and 3.4.8 allows remote attackers to alter database queries through crafted Big5 input. The Big5 path in mysql_real_escape_string() fails to neutralize a quote following a crafted lead byte, leaving subsequent SQL syntax executable. Exploitation requires an application to escape unvalidated input with this function and interpolate the result into a text-protocol query using Big5.

CVSS severity6.9
Medium
EPSS probability0.59%
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 MariaDB Connector/C 3.3.18 and 3.4.8 allows remote attackers to alter database queries through crafted Big5 input. The Big5 path in mysql_real_escape_string() fails to neutralize a quote following a crafted lead byte, leaving subsequent SQL syntax executable. Exploitation requires an application to escape unvalidated input with this function and interpolate the result into a text-protocol query using Big5.

The record

CVE
CVE-2026-44172
Published
Jun 12, 2026
Updated
Jun 12, 2026
Vendor
MariaDB
Product
MariaDB Server
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 12, 2026Record 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== 3.3.18
  2. Affected versionversion== 3.4.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MariaDB · MariaDB Serverversion== 3.3.18; version== 3.4.8

Published CVSS scores

9.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
6.9GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

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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