Appian Hotfixes

This page lists all the recent hotfixes for Appian 26.9.

Hotfix package (22 Oct 2026)

This cumulative hotfix package includes all resolved issues listed below in a single download. This hotfix is required for any Appian 26.9 installations not currently up to date with the latest hotfixes.

To apply the hotfixes, you'll need to upgrade to the latest Appian on Kubernetes images for the relevant quarterly release.

After installing, you will be running on Appian 26.9.117.0.

You can view your current self-managed Appian version by logging into your Appian environment as a designer or system administrator and clicking the navigation menu > About Appian.

The package resolves the following issues.

26.9.117.0 (22 Oct 2026)

• Security Updates - Low

26.9.116.0 (17 Oct 2026)

• Security Updates - Critical

26.9.115.0 (15 Oct 2026)

• Security Updates - Critical

• AP-72575 - Medium
  Fixed an issue that resulted in failures when sorting on a related record fields for unsynced record types.

• AP-67507 - Low
  The Reset Authenticator App button in the Admin Console now appears only when MFA is on for all users by default.

• AP-71961 - Low
  Updates a dependency for ICU timezone update compliance.

26.9.80.0 (08 Oct 2026)

• Security Updates - Critical

• AP-73087 - High
  A data race existed in the federated query framework where query metrics were read without proper synchronization while another thread was concurrently initializing the query execution. Under the right timing conditions, this could result in a gateway crash, causing in-flight queries against connected databases (such as MariaDB, Snowflake, or other federated sources) to fail. The fix adds proper locking around the metrics read path to prevent concurrent access.

• AP-72577 - Medium
  Fixed an issue where opening long dropdowns on small screen sizes blocked part of the page

• AP-73172 - Medium
  Fixed an issue that caused failed connections to the Appian Cloud database when querying unsynced record types on sites with dynamic scaling for data fabric queries enabled.

• AP-71812 - Low
  A new site property is available that reduces the number of open connections to external databases at startup by opening connections only upon initially querying the database.

• AP-73162 - Low
  Fixes an issue in which binlogs were not getting purged appropriately upon upgrading to MariaDB V11.8.

26.9.50.0 (01 Oct 2026)

• Security Updates - High

• AP-72313 - High
  Fixed an issue that caused the edit form for control panel hierarchy items with a large number of data fields to load slowly.

• AP-73687 - High
  Fixed an issue where the process modeler failed to open on sites that have multiple versions of the same plugin installed.

• AP-67193 - Medium
  Fixed a bug where password reset links failed to open the reset page when strict servlet compliance was turned on.

• AP-71689 - Medium
  Fixed an issue where post-login and logout redirects failed with HTTP 404 errors when strict servlet compliance was enabled.

• AP-71199 - Low
  Updated a!genAiModels() response to reflect each model's maximum context window.

• AP-71812 - Low
  A new site property is available that reduces the number of open connections to external databases at startup by opening connections only upon initially querying the database.

26.9.40.0 (25 Sep 2026)

• Security Updates - Critical

• AP-70255 - Medium
  Fixed an issue where Health Check failed to create the data collection file due to corrupted log data.

• AP-58231 - Low
  Fixed an issue in the data service that in rare cases caused queries to be routed to unhealthy data service pods.

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