Featbit

v5.4.1 Breaking

This release includes 1 breaking change for platform teams planning a safe upgrade.

Published 1mo Productivity & Wikis

View tool

✓ No known CVEs patched

Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

ab-test ab-testing asp-net-core ci-cd c# .net

+12 more

entitlement experimentation feature feature-flags feature-management feature-toggles progressive-delivery python release-as-code remote-config self-hosted typescript

Affected surfaces

breaking_upgrade

ReleasePort's take

Moderate signal

editorial:auto 1mo

Version 5.4.1 mandates upgrade scripts for PostgreSQL and MongoDB schemas.

Why it matters: All deployments using PostgreSQL or MongoDB must run the provided upgrade scripts before upgrading to version 5.4.1; failure will cause data‑access errors.

Summary

AI summary

Database schema changes require applying upgrade scripts for PostgreSQL and MongoDB.

Changes in this release

Type	Severity	Summary	CVE
Breaking	High	Database schema changes require upgrade scripts for PostgreSQL and MongoDB. Database schema changes require upgrade scripts for PostgreSQL and MongoDB. Source: llm_adapter@2026-06-12 Confidence: high	—
Feature	Medium	Adds cursor-based pagination for end-users. Adds cursor-based pagination for end-users. Source: llm_adapter@2026-06-12 Confidence: high	—
Bugfix	Medium	Fixes evaluation of flag names or keys longer than 64 characters. Fixes evaluation of flag names or keys longer than 64 characters. Source: llm_adapter@2026-06-12 Confidence: high	—

Full changelog

What's Changed

✨ feat: cursor-based pagination for end-users by @deleteLater in https://github.com/featbit/featbit/pull/915
🐛 fix: flag names or keys longer than 64 characters will not be evaluated by @CHR-LeeOlsen in https://github.com/featbit/featbit/pull/917

Breaking Changes

This release includes database schema changes. To upgrade, please apply the corresponding scripts for your database:

PostgreSQL: Apply the v5.4.1.sql script
MongoDB: Execute the v5.4.1.js script

Full Changelog: https://github.com/featbit/featbit/compare/5.4.0...5.4.1

Breaking Changes

Database schema changes necessitate applying upgrade scripts (PostgreSQL v5.4.1.sql, MongoDB v5.4.1.js) during the upgrade.

View diff on GitHub

Weekly OSS security release digest.

The CVE patches and breaking changes that affected production tools this week. One email, every Sunday.

No spam, unsubscribe anytime.

Share this release

Share on X Share on Bluesky

Track Featbit

Get notified when new releases ship.

About Featbit

Enterprise-grade feature flag platform that you can self-host.

All releases →

Related context

Related tools

Earlier breaking changes

v5.4.0 Requires database schema migration scripts for PostgreSQL and MongoDB to upgrade to this release.
v5.4.0 Migrates the `tags` parameter for tag‑management endpoints from URL query string to JSON request body.
v5.4.0 Deprecates the standalone "Data Sync" module, integrating its capabilities into the "End Users" module.
v5.3.4 Jwt__Key is now mandatory for HS256 signing.