CVE-2026-44168 | MariaDB: wsrep SST unsafe parameter handling on the donor side

MariaDB server is a community developed fork of MySQL server. From versions 10.6.1 to before 10.6.26, 10.11.1 to before 10.11.17, 11.4.1 to before 11.4.11, 11.8.1 to before 11.8.7, and 12.3.1, during the SST the donor node is interpolating parameters that the joiner sent into the command line. Not all parameters were properly validated which could allow a malicious joiner to execute arbitrary shell commands on the donor side via the mariabackup SST method. This issue has been patched in versions 10.6.26, 10.11.17, 11.4.11, 11.8.7, and 12.3.2.

Published: 2026-06-12 Last update: 2026-06-18 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-44168 is rated Moderate Risk (42.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.38%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-44168

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-23 0.58% 0.38% -0.20%
2 2026-06-15 0.07% 0.58% +0.52%
3 2026-06-12 — 0.07% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-44168

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.0 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.3 6.0 [email protected]

Weakness enumeration for CVE-2026-44168

OS Trackers for CVE-2026-44168

vendor priority summary link
debian not yet assigned CVE-2026-44168 not yet assigned priority: Debian including 1 source packages (mariadb), 4 status rows across 4 suites (bookworm, forky, sid, trixie): open 3, resolved 1. https://security-tracker.debian.org/tracker/CVE-2026-44168
suse high CVE-2026-44168 severity important: SUSE including 10 source package names (libmariadbd-devel-11.8.7-1.1, libmariadbd19-11.8.7-1.1, …), 10 product×package rows across 1 product lines (openSUSE Tumbleweed): Fixed 10. https://www.suse.com/security/cve/CVE-2026-44168/
ubuntu medium CVE-2026-44168 medium priority: Ubuntu including 5 source packages (mariadb, mariadb-10.0, mariadb-10.1, mariadb-10.3, mariadb-10.6), 27 status rows across 7 suites (bionic, focal, jammy, noble, questing, resolute, upstream): DNE 16, needs-triage 11. https://ubuntu.com/security/CVE-2026-44168

Affected software / configurations for CVE-2026-44168

Vendor Product Version Raw CPE
mariadb mariadb >= 10.6.1, < 10.6.26 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
mariadb mariadb >= 10.11.1, < 10.11.17 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
mariadb mariadb >= 11.4.1, < 11.4.11 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
mariadb mariadb >= 11.8.1, < 11.8.7 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
mariadb mariadb 12.3.1 cpe:2.3:a:mariadb:mariadb:12.3.1:*:*:*:*:*:*:*

References for CVE-2026-44168

cvelogic Threat Intelligence