---
title: Changelog
description: The following is the change history for the Duo Security Integration Kit 2.2.
component: duosecurity
page_id: duosecurity:duo_security_integration_kit_22:pf_duo_security_ik_22_changelog
canonical_url: https://docs.pingidentity.com/integrations/duosecurity/duo_security_integration_kit_22/pf_duo_security_ik_22_changelog.html
revdate: June 7, 2024
section_ids:
  duo-security-integration-kit-2-2-2-january-2020: Duo Security Integration Kit 2.2.2 - January 2020
  duo-security-integration-kit-2-2-1-july-2017: Duo Security Integration Kit 2.2.1 - July 2017
  duo-security-integration-kit-2-2-september-2016: Duo Security Integration Kit 2.2 - September 2016
  duo-security-integration-kit-2-1-april-2016: Duo Security Integration Kit 2.1 - April 2016
  duo-security-integration-kit-2-0-september-2015: Duo Security Integration Kit 2.0 - September 2015
---

# Changelog

The following is the change history for the Duo Security Integration Kit 2.2.

|   |                                                                                                                                                                                                                                          |
| - | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|   | This documentation is for Duo Security Integration Kit 2.2 and earlier. You can find later versions of the integration kit in the latest [Duo Security Integrations](../pf_is_overview_of_duo_security_integrations.html) documentation. |

## Duo Security Integration Kit 2.2.2 - January 2020

* Resolved an issue that allowed sessions to exceed the `max_age` parameter in the authentication request.

* Improved input validation for the **Session Timeout** field in the adapter configuration.

* Defect fixes to resolve a potential security vulnerability.

## Duo Security Integration Kit 2.2.1 - July 2017

* Resolved issue using the Duo adapter with **Failmode** set to **safe**.

* Upgraded to v2 of the Duo Web SDK.

## Duo Security Integration Kit 2.2 - September 2016

* Added **Failmode** option, allowing users to bypass second factor authentication in the event that the Duo service is down.

## Duo Security Integration Kit 2.1 - April 2016

* Added clustering support without the use of sticky sessions.

* Added option to configure login template for each adapter instance.

## Duo Security Integration Kit 2.0 - September 2015

* Initial release.

* Added support for SSO.