CVE-2026-41487 Langfuse: Improper role-based-access control in Langfuse LLM connection management allowed users of role “member” to retrieve stored LLM provider API keys

Langfuse is an open source large language model engineering platform. From version 3.68.0 to before version 3.167.0, there is a role-based-access control flaw in the LLM connection update flow. An authenticated, low-privileged user of role “member” in a project could request the update of an...

PT-2026-39011

Name of the Vulnerable Software and Affected Versions Langfuse versions 3.68.0 through 3.166.0 Description A role-based access control flaw exists in the LLM connection update flow. An authenticated user with the "member" role in a project can request an update to an existing LLM connection by...