CyberSecBulletin
CVE-2026-48165NVD status: Modified

server: Improper Neutralization of Special Elements used in an OS Command

Published Updated By the CyberSecBulletin desk

CVE-2026-48165 is a high-severity improper neutralization of special elements used in an OS command vulnerability in server from MariaDB, with a CVSS 3.1 base score of 7.2 out of 10. It can be exploited remotely over the network by an attacker with administrator privileges, without any action from a user. Affected server versions: >= 10.6.1, < 10.6.27; >= 10.11.1, < 10.11.18; >= 11.4.1, < 11.4.12, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.51% chance of exploitation within 30 days, higher than 75% of scored CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Mariadb to 10.6.27 or 10.11.18 or 11.4.12 or 11.8.8, whichever matches your release line, or a later version.
  2. Read the advisory on github.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
MariaDBserver>= 10.6.1, < 10.6.27; >= 10.11.1, < 10.11.18; >= 11.4.1, < 11.4.12; >= 11.8.1, < 11.8.8; >= 12.3.1, < 12.3.2Not stated
Red HatRed Hat Enterprise Linux AppStream (v. 10)Not specified in the recordNot stated
Red HatRed Hat Enterprise Linux 7Not specified in the recordNot stated
Red HatRed Hat Enterprise Linux 9Not specified in the recordNot stated
Red HatRed Hat Enterprise Linux AppStream EUS (v. 10.0)Not specified in the recordNot stated
Red HatRed Hat Enterprise Linux AppStream (v. 8)Not specified in the recordNot stated
Red HatRed Hat Enterprise Linux AppStream (v. 9)Not specified in the recordNot stated
Red HatRed Hat Hardened ImagesNot specified in the recordNot stated
MariaDBMariadb10.6.1 up to, but not including, 10.6.27; 10.11.1 up to, but not including, 10.11.18; 11.4.1 up to, but not including, 11.4.12; 11.8.1 up to, but not including, 11.8.8; 12.3.110.6.27, 10.11.18, 11.4.12, 11.8.8

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
HighAdministrator-level access is required first.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.

Scoring systemScoreSeverityScored by
CVSS 3.18.0HighCNA (github.com)
CVSS 3.17.2HighNVD
CVSS 3.19.1CriticalCNA

Official description

MariaDB server is a community developed fork of MySQL server. 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 before 11.8.8, and 12.3.1, a high-privileged MariaDB user could've used wsrep_sst_receive_address or wsrep_sst_donor global system variables to execute shell commands as the uid of the mariadbd process on the galera joiner node. This issue has been patched in versions 10.6.27, 10.11.18, 11.4.12, 11.8.8, and 12.3.2.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Neutralization of Special Elements used in an OS Command

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.

How developers prevent this class of flaw

  • If at all possible, use library calls rather than external processes to recreate the desired functionality.
  • For any data that will be used to generate a command to be executed, keep as much of that data out of external control as possible. For example, in web applications, this may require storing the data locally in the session's state instead of sending it out to the client in a hidden form field.
  • For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

More Improper Neutralization of Special Elements used in an OS Command vulnerabilities (CWE-78)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
  3. Record last changed materially (score, affected products, status or references).

References

Third-party and government advisories

Other vulnerabilities in server

All server vulnerabilities

Recent Improper Neutralization of Special Elements used in an OS Command vulnerabilities

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