High 8.5Published Oct 9, 2026

CVE-2026-107815MariaDB: one byte OOB write in DOS tables of the CONNECT engine

Updated under an hour ago (Oct 29, 2026, 4:30 PM ET)

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It affects MariaDB server and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.90%, higher than 59% of scored CVEs.

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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.

CVSS: 8.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.90% (percentile 59)
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

MariaDB server mariadb:server (from the name)	from 10.6.1, < 10.6.28; from 10.11.1, < 10.11.19; from 11.4.1, < 11.4.13; from 11.8.1, < 11.8.9; from 12.3.1, < 12.3.3; from 13.0.1, < 13.0.2	CNA record
mariadb mariadb mariadb:mariadb	from 10.6.1 before 10.6.28; from 10.11.1 before 10.11.19; from 11.4.1 before 11.4.13; from 11.8.1 before 11.8.9; from 12.3.1 before 12.3.3; from 13.0.1 before 13.0.2	NVD

References

References

https://github.com/MariaDB/server/security/advisories/GHSA-4wgx-ffg9-jrwq	x-refsource-confirm, vendor-advisory
https://github.com/MariaDB/server/commit/b369925f6855d3e1f0ebcf453492724b99fda6f8	x-refsource-misc, patch
https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19	x-refsource-misc, release-notes
https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28	x-refsource-misc, release-notes
https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13	x-refsource-misc, release-notes
https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9	x-refsource-misc, release-notes
https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3	x-refsource-misc, release-notes
https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2	x-refsource-misc, release-notes
https://jira.mariadb.org/browse/MDEV-40637	x-refsource-misc, issue-tracking

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.