v4.6.6

iii-hq/iiiv4.6.6Sep 2, 2026by github-actions[bot]

AI Summary

This release focuses on stability and security, including OpenSSL base image updates and security patches for NLTK. It also fixes a bug where reasoning levels weren't persisting correctly and ensures enterprise settings are handled gracefully.

Key Highlights

Security updates for NLTK and OpenSSL base images
Fix for persisting the reasoning level chosen before the first message
Graceful handling of enterprise settings 404 errors

New Features

Persistence fix for reasoning levels
Enterprise settings compatibility fix

Full Release Notes

## Warning
Do not upgrade to this release if you want to preserve your existing indexed documents but have not yet run the document index migration, which can be done from any version v3.x. [See additional documentation here](https://docs.onyx.app/admins/advanced_configs/opensearch_document_index_migration#opensearch-document-index-migration).

See the assets to download this version and install.

## What's Changed
* fix(web): treat enterprise-settings 404 as CE, not a fatal error (#14413) to release v4.6 by @nmgarza5 in https://github.com/onyx-dot-app/onyx/pull/14415
* chore(deps): bump nltk to 3.10.3 (PYSEC-2026-3735) (#14400) to release v4.6 by @nmgarza5 in https://github.com/onyx-dot-app/onyx/pull/14418
* chore(docker): refresh the DHI base image digests for openssl 3.5.7 (#14428) to release v4.6 by @nmgarza5 in https://github.com/onyx-dot-app/onyx/pull/14433
* chore(docker): refresh the python slim digest for openssl 3.5.7 (#14407) to release v4.6 by @nmgarza5 in https://github.com/onyx-dot-app/onyx/pull/14447
* fix(web): persist a reasoning level chosen before the first message (#14448) to release v4.6 by @nmgarza5 in https://github.com/onyx-dot-app/onyx/pull/14450

**Full Changelog**: https://github.com/onyx-dot-app/onyx/compare/v4.6.5...v4.6.6