CVE-2026-44172

MariaDB: mysql_real_escape_string() incorrectly handled big5

CRITICAL
9.1
CVSS Score
Published: June 12, 2026 at 05:34 PM UTC
Updated: October 26, 2026 at 11:10 AM UTC
2 products affected across 2 vendorsEnterprise LinuxMariaDB

Using server by MariaDB?

Get instant alerts when new vulnerabilities affect server - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
CRITICAL9.1
Exploit prediction
EPSS 1%
SSVC
No known exploit

Description

MariaDB server is a community developed fork of MySQL server. In versions 3.3.18 and 3.4.8, an application that was taking non-validated user input, escaping it with mysql_real_escape_string() and sending it to the database using text protocol and big5 character set was vulnerable to SQL injections, even though mysql_real_escape_string() was supposed to prevent them. This issue has been patched in versions 3.3.19 and 3.4.9.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Vendor states this is fixed in 0:3.4.4-1.el10_0.1 (unaffected)
Vendor states this is fixed in 0:3.4.4-2.el10_2 (unaffected)
Vendor states this is fixed in 10 (unaffected)
Vendor states this is fixed in 7 (unaffected)
Vendor states this is fixed in 8 (unaffected)
Vendor states this is fixed in 9 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (14)

x_refsource_CONFIRMMitigationVendor Advisory
Source: cverecord
https://github.com/MariaDB/server/security/advisories/GHSA-pv9p-5w55-55jm
x_refsource_MISCThird Party Advisory
Source: cverecord
https://jira.mariadb.org/browse/CONC-819
Third Party Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/security/cve/CVE-2026-44172
Third Party Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://bugzilla.redhat.com/show_bug.cgi?id=2488459
Third Party Advisory
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44172.json
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:33093
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:33412
Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
https://access.redhat.com/errata/RHSA-2026:33464

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.1CRITICALredhat-SADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-89

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card