CVE-2026-107815 - Vulnerability Details

- MariaDB: one byte OOB write in DOS tables of the CONNECT engine

Description

MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the CONNECT engine's DOS table type used an incorrect boundary check that permitted a one-byte null write beyond a stack buffer at an attacker-controlled offset. An authenticated user able to use the CONNECT engine could cause a crash and potentially remote code execution. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.

Published: 2026-10-09

Score: 8.5 High

EPSS: 1.4% Low

KEV: No

Impact:

Action:

Analysis

Impact

This vulnerability is an out‑of‑bounds null write that occurs when a CONNECT engine DOS table type processes data with an incorrect boundary check, allowing a stack buffer overflow at an attacker‑controlled offset. The single‑byte overwrite can corrupt stack memory, causing a crash and potentially enabling remote code execution. The weakness is classified as CWE‑787, reflecting a buffer overrun that writes beyond a boundary.

Affected Systems

MariaDB server community editions from 10.6.1 through 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2 are affected. These versions employ the CONNECT engine with the vulnerable DOS table type implementation.

Risk and Exploitability

The CVSS score is 8.5, indicating high severity, while the EPSS score is not available and the vulnerability is not listed in CISA KEV. An authenticated user who can invoke the CONNECT engine can trigger the stack corruption; the attack requires proper privileges to construct a malicious DOS table. Successful exploitation would lead to a database crash and could potentially allow arbitrary code execution on the host. The risk is thus medium to high for environments where the CONNECT engine is enabled for users with write permissions.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

MariaDB

server

affected

Version	Status	Constraints
`>= 10.6.1, < 10.6.28`	affected	—
`>= 10.11.1, < 10.11.19`	affected	—
`>= 11.4.1, < 11.4.13`	affected	—
`>= 11.8.1, < 11.8.9`	affected	—
`>= 12.3.1, < 12.3.3`	affected	—
`>= 13.0.1, < 13.0.2`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:mariadb:mariadb::::::::
	cpe:2.3:a:mariadb:mariadb::::::::
	cpe:2.3:a:mariadb:mariadb::::::::
	cpe:2.3:a:mariadb:mariadb::::::::
	cpe:2.3:a:mariadb:mariadb::::::::
	cpe:2.3:a:mariadb:mariadb::::::::

No data.

Vendor Product Confidence Versions

Mariadb

Server

100%

Version	Status	Scheme	Platform
`[10.6.1,10.6.28)`	affected	semver	—
`[10.11.1,10.11.19)`	affected	semver	—
`[11.4.1,11.4.13)`	affected	semver	—
`[11.8.1,11.8.9)`	affected	semver	—
`[12.3.1,12.3.3)`	affected	semver	—
`[13.0.1,13.0.2)`	affected	semver	—

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

Upgrade MariaDB server to at least version 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, or 13.0.2
If an upgrade cannot be applied immediately, disable the CONNECT engine or grant its use only to highly trusted accounts
Monitor the database for unexpected crashes, memory corruption errors, or repeated attempts to create DOS tables and review logs for signs of exploitation

Generated by OpenCVE AI on October 9, 2026 at 17:50 UTC.

Tracking

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Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.01381.

Exploitation none

Automatable no

Technical Impact total

References

Link	Providers
https://github.com/MariaDB/server/commit/b369925f6855d3e1f0ebcf453492724b99fda6f8
https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3
https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2
https://github.com/MariaDB/server/security/advisories/GHSA-4wgx-ffg9-jrwq
https://jira.mariadb.org/browse/MDEV-40637
https://nvd.nist.gov/vuln/detail/CVE-2026-107815
https://www.cve.org/CVERecord?id=CVE-2026-107815

History

Wed, 14 Oct 2026 14:30:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mariadb mariadb
CPEs		cpe:2.3:a:mariadb:mariadb::::::::
Vendors & Products		Mariadb mariadb

Tue, 13 Oct 2026 18:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Sat, 10 Oct 2026 00:30:00 +0000

Type	Values Removed	Values Added
References		https://nvd.nist.gov/vuln/detail/CVE-2026-107815 https://www.cve.org/CVERecord?id=CVE-2026-107815
Metrics	threat_severity `None`	threat_severity `Important`

Fri, 09 Oct 2026 17:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Mariadb Mariadb server
Vendors & Products		Mariadb Mariadb server

Fri, 09 Oct 2026 16:30:00 +0000

Type	Values Removed	Values Added
Description		MariaDB server is a community developed fork of MySQL server. From 10.6.1 until 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2, the CONNECT engine's DOS table type used an incorrect boundary check that permitted a one-byte null write beyond a stack buffer at an attacker-controlled offset. An authenticated user able to use the CONNECT engine could cause a crash and potentially remote code execution. This issue is fixed in versions 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, and 13.0.2.
Title		MariaDB: one byte OOB write in DOS tables of the CONNECT engine
Weaknesses		CWE-787
References		https://github.com/MariaDB/server/commit/b369925f6855d3e1f0ebcf453492724b99fda6f8 https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19 https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28 https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13 https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9 https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3 https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2 https://github.com/MariaDB/server/security/advisories/GHSA-4wgx-ffg9-jrwq https://jira.mariadb.org/browse/MDEV-40637
Metrics		cvssV3_1 `{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'}`

Subscriptions

Mariadb Mariadb Server

MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-09T16:05:49.046Z

Updated: 2026-10-13T17:01:48.035Z

Reserved: 2026-10-08T21:23:59.822Z

Link: CVE-2026-107815

Vulnrichment

Updated: 2026-10-13T17:01:41.953Z

NVD

Status : Analyzed

Published: 2026-10-09T17:16:45.970

Modified: 2026-10-14T14:12:37.777

Link: CVE-2026-107815

Redhat

Severity : Important

Publid Date: 2026-10-09T16:05:49Z

Links: CVE-2026-107815 - Bugzilla

OpenCVE Enrichment

Updated: 2026-10-09T18:00:12Z

Weaknesses

CWE-787
Out-of-bounds Write

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Exploitation none

Automatable no

Technical Impact total

Subscriptions

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