CVE-2026-49261Network attack vector

Unauthenticated command execution via unvalidated peer metadata

Published Jun 11, 2026 · Updated Jun 11, 2026

OS command injection in affected MariaDB Server releases allows remote attackers to execute shell commands through Galera. The notification path interpolates peer-supplied wsrep_node_name and wsrep_node_incoming_address values into a command line without validation. Exploitation requires Galera clustering and wsrep_notify_cmd to be enabled; a joining node executes commands with the MariaDB service account's privileges.

CVSS severity10.0
Critical
EPSS probability1.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in affected MariaDB Server releases allows remote attackers to execute shell commands through Galera. The notification path interpolates peer-supplied wsrep_node_name and wsrep_node_incoming_address values into a command line without validation. Exploitation requires Galera clustering and wsrep_notify_cmd to be enabled; a joining node executes commands with the MariaDB service account's privileges.

The record

CVE
CVE-2026-49261
Published
Jun 11, 2026
Updated
Jun 11, 2026
Vendor
MariaDB
Product
MariaDB Server
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 10.11.1, < 10.11.18
  2. Affected versionversion=>= 10.6.1, < 10.6.27
  3. Affected versionversion=>= 11.4.1, < 11.4.12
  4. Affected versionversion=>= 11.8.1, < 11.8.8
  5. Affected versionversion== 12.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MariaDB · MariaDB Serverversion=>= 10.11.1, < 10.11.18; version=>= 10.6.1, < 10.6.27; version=>= 11.4.1, < 11.4.12; version=>= 11.8.1, < 11.8.8; version== 12.3.1

Published CVSS scores

9.8NISTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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