Patch Forecast
Amber warning
Patch this week.

CVE-2026-85746

MariaDB server is a community developed fork of MySQL server

Risk score
69/100
CVSS
9.9 v3.1
Exploit chance (30 days)
0.6%
Published
16 Oct 2026

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What to know

What it is
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 rese…
Affected
Mariadb before 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3, 13.0.2
Fix
Upgrade Mariadb to 10.6.28, 10.11.19, 11.4.13, 11.8.9, 12.3.3 or 13.0.2 (whichever matches your release line), or later.
Exploitation
No known exploitation

Why it is Amber

  • CVSS 9.9 critical

References

Original 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, 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.

Last activity 16 Oct 2026. Patch Forecast updates every hour.