Critical severity · published Jun 12, 2026
CVE-2026-44172
MariaDB: mysql_real_escape_string() incorrectly handled big5
9.1
CVSS
1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
server · MariaDB
= 3.3.18; = 3.4.8 · source: vendor
EL
Enterprise Linux · Redhat
10.0 · source: NVD
MA
Mariadb · Mariadb
3.3.18; 3.4.8 · source: NVD
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat
All versions, or not specified · source: CISA
RH
Red Hat Hardened Images · Red Hat
All versions, or not specified · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44172
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44172
Mitigation
https://github.com/MariaDB/server/security/advisories/GHSA-pv9p-5w55-55jm
Third Party Advisory
https://jira.mariadb.org/browse/CONC-819
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:30135
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:43505
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:47772
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:68567
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