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CVE-2026-48163VulnerabilityPublished Updated

Mariadb 10.3: From versions 10.6.1 to before 10.6.27, 10.11.1 to before 10.11.18, 11.4.1 to before 11.4.12, 11.8.1 to

Affects mariadb-10.3Source GCVE Database

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Authoritative record:CVE-2026-48163· High 8.0

Not known to be exploited · CVSS 8.0 High : upgrade to 1:11.8.6-5ubuntu0.1 soon.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 3.1 base score
8.0High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 60% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1:11.8.6-5ubuntu0.1
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Jun 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade the Ubuntu mariadb package to 1:11.8.6-5ubuntu0.1.

Affected software

ProductAffectedFixed in
Ubuntu 26.04 LTSmariadbpkg:deb/ubuntu/mariadb?arch=source&distro=resoluteOther threatsAffected
  • <1:11.8.6-5ubuntu0.1
Fixed in
  • 1:11.8.6-5ubuntu0.1
Ubuntu 25.10mariadbpkg:deb/ubuntu/mariadb?arch=source&distro=questingOther threatsAffected
  • 1:11.4.5-1 – 1:11.8.3-1build1
6 affected builds
Fixed in–
Ubuntu 24.04 LTSmariadbpkg:deb/ubuntu/mariadb?arch=source&distro=nobleOther threatsAffected
  • 1:10.11.4-1 – 1:10.11.14-0ubuntu0.24.04.1
10 affected builds
Fixed in–
Ubuntu 22.04 LTSmariadb-10.6pkg:deb/ubuntu/mariadb-10.6?arch=source&distro=jammyOther threatsAffected
  • 1:10.6.7-2ubuntu1 – 1:10.6.23-0ubuntu0.22.04.1
9 affected builds
Fixed in–
Ubuntu 20.04 LTSmariadb-10.3pkg:deb/ubuntu/mariadb-10.3?arch=source&distro=focalOther threatsAffected
  • 1:10.3.17-1 – 1:10.3.39-0ubuntu0.20.04.2
15 affected builds
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Apply the official patches provided by MariaDB and Ubuntu by upgrading to versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, or later as appropriate. For Ubuntu users, update to package version 1:11.8.6-5ubuntu0.1 or later as per Ubuntu Security Notice USN-8536-1. No additional mitigations are required once the patch is applied.

Description

MariaDB server versions 10.6.1 to before 10.6.27, 10.11.1 to before 10.11.18, 11.4.1 to before 11.4.12, 11.8.1 to before 11.8.8, and 12.3.1 contain a vulnerability in the rsync State Snapshot Transfer (SST) method. During SST, the donor node interpolates parameters sent by the joiner node into the command line without proper validation, allowing a malicious joiner to execute arbitrary shell commands on the donor. This critical vulnerability has been patched in versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2.

References

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