CVE-2026-85746MariaDB: Out-of-bound buffer write on in `ST_AsText` of nested GeometryCollections
Updated under an hour ago ()
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It affects MariaDB server. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 9.9 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 16, 2026
Affected products
MariaDB server mariadb:server (from the name) | from 10.6.1, < 10.6.28; from 10.11.1, < 10.11.19; from 11.4.1, < 11.4.13; from 11.8.1, < 11.8.9; from 12.3.1, < 12.3.3; from 13.0.1, < 13.0.2 | CNA record |
References
- https://github.com/MariaDB/server/security/advisories/GHSA-8fvj-c57c-pggxx-refsource-confirm
- https://github.com/MariaDB/server/commit/5c04ca5524385356ff7cf84974a7d491974c1f85x-refsource-misc
- https://github.com/MariaDB/server/releases/tag/mariadb-10.11.19x-refsource-misc
- https://github.com/MariaDB/server/releases/tag/mariadb-10.6.28x-refsource-misc
- https://github.com/MariaDB/server/releases/tag/mariadb-11.4.13x-refsource-misc
- https://github.com/MariaDB/server/releases/tag/mariadb-11.8.9x-refsource-misc
- https://github.com/MariaDB/server/releases/tag/mariadb-12.3.3x-refsource-misc
- https://github.com/MariaDB/server/releases/tag/mariadb-13.0.2x-refsource-misc
- https://jira.mariadb.org/browse/MDEV-40329x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.