CVE-2026-85746: mariadb mariadb

CVSS 9.9 (critical) · published 2026-10-16

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, ST_AsText can write beyond an allocated output buffer when converting deeply nested GeometryCollections because recursive WKT serialization does not account for bytes consumed or reserve sufficient space. A low-privileged remote attacker can submit a specially crafted GIS object to corrupt memory and potentially achieve code execution when combined with another vulnerability. 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 products (NVD): mariadb mariadb

Fixed in (NVD): 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3

Weakness: CWE-787

Source: NVD CVE-2026-85746

References

• https://github.com/MariaDB/server/commit/5c04ca5524385356ff7cf84974a7d491974c1f85
• https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19
• https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28
• https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13
• https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9
• https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3
• https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2
• https://github.com/MariaDB/server/security/advisories/GHSA-8fvj-c57c-pggx
• https://jira.mariadb.org/browse/MDEV-40329

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.