CVE-2026-107816
published 2026-10-09CVE-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…
PriorityP340medium6.4CVSS 3.1
AVNACLPRLUINSCCLINAL
EPSS
0.31%
22.8th percentile
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.
Affected
17 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| mariadb-devel_10.3 | mariadb | — | — |
| mariadb | mariadb | — | — |
| mariadb | mariadb | >= 10.11.1 < 10.11.19 | 10.11.19 |
| mariadb | mariadb | >= 10.6.1 < 10.6.28 | 10.6.28 |
| mariadb | mariadb | >= 11.4.1 < 11.4.13 | 11.4.13 |
| mariadb | mariadb | >= 11.8.1 < 11.8.9 | 11.8.9 |
| mariadb | mariadb | >= 12.3.1 < 12.3.3 | 12.3.3 |
| mariadb | mariadb | >= 13.0.1 < 13.0.2 | 13.0.2 |
| mariadb | server | — | — |
| mariadb | server | — | — |
| mariadb | server | — | — |
| mariadb | server | — | — |
| mariadb | server | — | — |
| mariadb | server | — | — |
| mariadb_10.11 | mariadb | — | — |
| mariadb_10.3 | mariadb | — | — |
| mariadb_11.8 | mariadb | — | — |
CVSS provenance
nvdv3.16.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:L
vendor_redhat6.4MEDIUM
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Red Hat
mariadb: mariadb: Information disclosure via embedded null bytes in query cache plugin
vendor_redhat·2026-10-09·CVSS 6.4
CVE-2026-107816 [MEDIUM] CWE-125 mariadb: mariadb: Information disclosure via embedded null bytes in query cache plugin
mariadb: mariadb: Information disclosure via embedded null bytes in query cache plugin
A flaw was found in MariaDB. An authenticated user can execute a database query containing embedded null bytes, which misleads the query cache information (qc_info) plugin. When the cached query details are later read from the information schema, the server accesses memory beyond the allocated buffer. This issue can lead to unauthorized information disclosure or cause a denial of service (DoS) by crashing the database server.
Package: mariadb10.11 (Red Hat Enterprise Linux 10) - Fix deferred
Package: mariadb11.8 (Red Hat Enterprise Linux 10) - Fix deferred
Package: mariadb (Red Hat Enterprise Linux 7) - Fix deferred
Package: mariadb:10.11/mariadb (Red Hat Enterprise Linux 8) - Fix deferred
Package:
VulDB
MariaDB up to 13.0.1 qc_info plugin heap-based overflow
vuldb·2026-10-09·CVSS 6.4
CVE-2026-107816 [MEDIUM] MariaDB up to 13.0.1 qc_info plugin heap-based overflow
A vulnerability categorized as critical has been discovered in MariaDB up to 13.0.1. Affected by this vulnerability is an unknown functionality of the component qc_info plugin. Such manipulation leads to heap-based buffer overflow.
This vulnerability is documented as CVE-2026-107816. The attack can be executed remotely. There is not any exploit available.
It is advisable to upgrade the affected component.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-107816 mariadb11.8: mariadb: Information disclosure via embedded null bytes in query cache plugin [fedora-all]
bugzilla·2026-10-22·CVSS 6.4
CVE-2026-107816 [MEDIUM] CVE-2026-107816 mariadb11.8: mariadb: Information disclosure via embedded null bytes in query cache plugin [fedora-all]
CVE-2026-107816 mariadb11.8: mariadb: Information disclosure via embedded null bytes in query cache plugin [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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,
Bugzilla
CVE-2026-107816 mariadb10.11: mariadb: Information disclosure via embedded null bytes in query cache plugin [fedora-all]
bugzilla·2026-10-22·CVSS 6.4
CVE-2026-107816 [MEDIUM] CVE-2026-107816 mariadb10.11: mariadb: Information disclosure via embedded null bytes in query cache plugin [fedora-all]
CVE-2026-107816 mariadb10.11: mariadb: Information disclosure via embedded null bytes in query cache plugin [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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
Bugzilla
CVE-2026-107816 mariadb12.3: mariadb: Information disclosure via embedded null bytes in query cache plugin [fedora-all]
bugzilla·2026-10-22·CVSS 6.4
CVE-2026-107816 [MEDIUM] CVE-2026-107816 mariadb12.3: mariadb: Information disclosure via embedded null bytes in query cache plugin [fedora-all]
CVE-2026-107816 mariadb12.3: mariadb: Information disclosure via embedded null bytes in query cache plugin [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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,
Bugzilla
CVE-2026-107816 mariadb: mariadb: Information disclosure via embedded null bytes in query cache plugin
bugzilla·2026-10-09·CVSS 6.4
CVE-2026-107816 [MEDIUM] CVE-2026-107816 mariadb: mariadb: Information disclosure via embedded null bytes in query cache plugin
CVE-2026-107816 mariadb: mariadb: Information disclosure via embedded null bytes in query cache plugin
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.
https://github.com/MariaDB/server/commit/0931994096b84ecc9ffc8eb3517c7e09e6e8631ehttps://github.com/MariaDB/server/releases/tag/mariadb-10.11.19https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2https://github.com/MariaDB/server/security/advisories/GHSA-wfqg-88r5-55f6https://jira.mariadb.org/browse/MDEV-40670
2026-10-09
Published