> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/release-notes/columnstore/23.02/23.02.20.md).

# MariaDB ColumnStore 23.02.20 Release Notes

MariaDB ColumnStore 23.02.20 is a Stable (GA) release of MariaDB ColumnStore, released on 2026-07-20

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ColumnStore 23.02.20 works with MariaDB Enterprise Server 10.6.
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**Release date:** 20 Jul 2026

MariaDB ColumnStore 23.02.20 is a [Stable (GA)](/docs/release-notes/community-server/about/release-criteria.md) release of MariaDB ColumnStore.

## Fixed security vulnerabilities

The bundled Apache Thrift library was updated from 0.17.0 to 0.23.0, which resolves the following vulnerabilities. ColumnStore bundles only the Thrift C++ bindings, so vulnerabilities that affect only other language bindings are not listed.

* [CVE-2026-41604](https://www.cve.org/CVERecord?id=CVE-2026-41604)
* [CVE-2026-41605](https://www.cve.org/CVERecord?id=CVE-2026-41605)
* [CVE-2026-41606](https://www.cve.org/CVERecord?id=CVE-2026-41606)
* [CVE-2026-41607](https://www.cve.org/CVERecord?id=CVE-2026-41607)
* [CVE-2026-43868](https://www.cve.org/CVERecord?id=CVE-2026-43868)
* [CVE-2026-43869](https://www.cve.org/CVERecord?id=CVE-2026-43869)
* [CVE-2026-43870](https://www.cve.org/CVERecord?id=CVE-2026-43870)

## Notable changes

* \[MCOL-6477] - Updated the bundled Apache Thrift to 0.23.0
* \[[MCOL-6178](https://jira.mariadb.org/browse/MCOL-6178)] - Backported the CMAPI upgrade architecture from ColumnStore 23.10, to make upgrades from 23.02 to later versions smoother
* \[[MCOL-6192](https://jira.mariadb.org/browse/MCOL-6192)] - CMAPI can now start MariaDB Enterprise Server on all nodes of a cluster

## Issues fixed

### Can result in hang or crash

* \[[MCOL-6404](https://jira.mariadb.org/browse/MCOL-6404)] - Table locks could remain held after `mcs_backup_manager.sh dbrm_backup`, blocking later `cpimport` and `caldroppartitions` operations
* \[[MCOL-6438](https://jira.mariadb.org/browse/MCOL-6438)] - PrimProc could crash with `AllowDiskBasedAggregation=Y`

### Can result in data corruption

* \[[MCOL-6434](https://jira.mariadb.org/browse/MCOL-6434)] - Corruption of BRM data after a fatal unrecoverable signal

### Related to memory use

* \[[MCOL-6441](https://jira.mariadb.org/browse/MCOL-6441)] - Incorrect memory accounting

### Other fixes

* \[[MCOL-6292](https://jira.mariadb.org/browse/MCOL-6292)] - CMAPI printed a `pkg_resources` deprecation warning

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