Medium severity · published Oct 9, 2026
CVE-2026-107816
MariaDB: `qc_info` plugin can do OOB reads if query contains \0
6.4
CVSS
0.3%
EPSS
No
On KEV
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 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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 28% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
server · MariaDB
>= 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 · source: vendor
MA
Mariadb · Mariadb
10.6.1 before 10.6.28; 10.11.1 before 10.11.19; 11.4.1 before 11.4.13; 11.8.1 before 11.8.9; 12.3.1 before 12.3.3; 13.0.1 before 13.0.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107816
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107816
x_refsource_CONFIRM
https://github.com/MariaDB/server/security/advisories/GHSA-wfqg-88r5-55f6
x_refsource_MISC
https://github.com/MariaDB/server/commit/0931994096b84ecc9ffc8eb3517c7e09e6e8631e
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
x_refsource_MISC
https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
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