Out-of-bounds Read in Mariadb Server
CVE-2026-107816
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.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Mariadb Server — versions >= 10.11.1, < 10.11.19, >= 10.6.1, < 10.6.28, >= 11.4.1, < 11.4.13
Weakness classification (CWE)
References
- github.com/MariaDB/server/security/advisories/GHSA-wfqg-88r5-55f6
- github.com/MariaDB/server/commit/0931994096b84ecc9ffc8eb3517c7e09e6e8631e
- github.com/MariaDB/server/releases/tag/mariadb-10.11.19
- github.com/MariaDB/server/releases/tag/mariadb-10.6.28
- github.com/MariaDB/server/releases/tag/mariadb-11.4.13
- github.com/MariaDB/server/releases/tag/mariadb-11.8.9
- github.com/MariaDB/server/releases/tag/mariadb-12.3.3
- github.com/MariaDB/server/releases/tag/mariadb-13.0.2
- jira.mariadb.org/browse/MDEV-40670
Frequently asked questions
- What is CVE-2026-107816?
- CVE-2026-107816 is a medium-severity vulnerability in Mariadb Server, classified under Out-of-bounds Read. CVSS score: 6.4/10. Published 2026-10-09.
- How severe is CVE-2026-107816?
- Medium severity. CVSS v3 base score is 6.4 out of 10.