CVE-2026-24055 Langfuse Slack OAuth Installation Endpoint Lacks Authentication, Enabling Arbitrary Project Linking

Langfuse is an open source large language model engineering platform. In versions 3.146.0 and below, the /api/public/slack/install endpoint initiates Slack OAuth using a projectId provided by the client without authentication or authorization. The projectId is preserved throughout the OAuth flow,...

Harvest: Login bypass on travel.██████████ aka "Harvest Spring Summit 2017"

Introduction I stumbled upon http://travel.████. It looks like the portal for Harvest Spring Summit 2017 travel planning and announcement. I was able to gain access to this portal and view the travel itineraries of some of the summit's participants. A note on scope I realize this domain is not...