CVE-2026-107816

MEDIUM 6.4

MariaDB: `qc_info` plugin can do OOB reads if query contains \0

CVSS Score

6.4

EPSS Score

0.0%

EPSS Percentile

0th

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 qc_info plugin could be confused by a query containing embedded null bytes. Reading information_schema.query_cache_info after such a query was cached could access data beyond the end of a heap-allocated buffer, potentially disclosing adjacent memory or crashing the server. 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.

CWE	CWE-125
Vendor	mariadb
Product	server
Published	Oct 9, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

None

Availability

Low

Affected Versions

MariaDB / server

>= 10.6.1, < 10.6.28 >= 10.11.1, < 10.11.19 >= 11.4.1, < 11.4.13 >= 11.8.1, < 11.8.9 >= 12.3.1, < 12.3.3 >= 13.0.1, < 13.0.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/MariaDB/server/security/advisories/GHSA-wfqg-88r5-55f6 github.com: https://github.com/MariaDB/server/commit/0931994096b84ecc9ffc8eb3517c7e09e6e8631e github.com: https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3 github.com: https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2 jira.mariadb.org: https://jira.mariadb.org/browse/MDEV-40670