> For the complete documentation index, see [llms.txt](https://docs.datasentinel.io/manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.datasentinel.io/manual/changelog/2026.md).

# 2026

All releases are cumulative. Upgrading to the latest version includes all previous changes.It's sufficient to install or run only the most recent release.

{% hint style="info" %}
Please refer to the documentation to [**upgrade Datasentinel**](/manual/implementation/upgrade/platform.md)**.**
{% endhint %}

{% updates format="full" %}
{% update date="2026-07-10" tags="fix,changes" %}

## V2026.07

### Security

> * Updated bundled OpenSSL 3.0.14 → 3.0.21, addressing CVE-2026-45447 and related upstream CVEs (defense-in-depth; not exploitable in normal Datasentinel usage).
> * Third-party dependencies have also been updated to address known security vulnerabilities.

### :wrench: Fixes

> * **Agentless monitoring**\
>   Connections pointing to an unreachable instance can now be deleted from the UI and the API. Previously the dispatcher's delete request timed out against an agent blocked on hung database I/O. The agent completed the deletion while the dispatcher aborted, leaving its instance pool out of sync and the connection stuck. The dispatcher now cleans up its own state whether the agent times out or answers 404 – Connection not found.
>   {% endupdate %}

{% update date="2026-06-25" tags="changes" %}

## V2026.06

### Alerting

> **Faster parsing**

### Agent v3.9.3

> This release integrates [**Agent v3.9.3**](/manual/implementation/agent-usage/release-notes.md) which includes two fixes related to tag handling.
> {% endupdate %}
> {% endupdates %}

{% updates format="full" %}
{% update date="2026-05-21" tags="improvement,fix,changes,fixes" %}

## V2026.05

### Diagnostic scripts

> The diagnostic file now includes internal InfluxDB performance metrics from the last 24 hours, providing deeper insight for troubleshooting and support analysis.\
> \
> Refer to [**Diagnostic Tools**](/manual/implementation/troubleshooting/platform-diagnostics-tools.md) section of the documentation.

### Top queries

> In rare cases, a query text may not be loaded into the platform. Datasentinel now automatically attempts to retrieve any missing query texts directly from the source PostgreSQL instance when displaying the [**Top Queries**](/manual/features/key-features/top-queries.md) dashboard

### Agent v3.9.2

> This release integrates [**Agent v3.9.2**](/manual/implementation/agent-usage/release-notes.md) which includes two fixes related to tag handling.

### :wrench: Fixes

> * **Full Report generation**\
>   Generating a [**Report** ](/manual/features/key-features/reporting.md)could occasionally fail with a `list index out of range` error.
> * **Top Queries export**\
>   Exporting [**Top Queries**](/manual/features/key-features/top-queries.md) data in JSON format did not honor the **per execution** flag.\
>   Resolved an error that occurred when exporting data in CSV format.
>   {% endupdate %}

{% update date="2026-02-17" tags="improvement,changes" %}

## V2026.02

### UI Layout Enhancement

> Improved layout structure to completely fill the screen and enhance high-resolution display support.

### Agent v3.9.1

> This release integrates [**Agent v3.9.1**](/manual/implementation/agent-usage/release-notes.md)
> {% endupdate %}

{% update date="2026-01-13" tags="feature,improvement,fix,changes,fixes" %}

## V2026.01

### Backend pool

> Backend process count and restart limits are now configurable.\
> Refer to [**Backend configuration**](/manual/implementation/platform-usage/configuration/backend.md) section for more details.

### Diagnostic Scripts

> Enhanced diagnostic scripts with additional system and process metrics.\
> Added a new script to compress Datasentinel log files for support purposes.\
> \
> Refer to [**Diagnostic Tools**](/manual/implementation/troubleshooting/platform-diagnostics-tools.md) section of the documentation.

### Alerting

> A dedicated database is now used for alerts to improve performance and avoid sharing resources with the metrics database.

### Libraries

> Updated third-party backend libraries.

### :wrench: Fixes

> * Enhanced error and exception handling for metrics database operations.
>   {% endupdate %}
>   {% endupdates %}


---

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