Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-41487

Gravedad CVSS v4.0:
MEDIA
Tipo:
CWE-284 Control de acceso incorrecto
Fecha de publicación:
08/05/2026
Última modificación:
13/05/2026

Descripción

*** Pendiente de traducción *** 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 existing LLM connection to an attacker-controlled baseUrl, causing Langfuse to reuse the stored provider secret and redirect the test request to an attacker-controlled endpoint. This could expose the plaintext provider LLM API key for that connection. The attack is only possible if a user is already part of a project and has “member” scoped access. This issue has been patched in version 3.167.0.

Productos y versiones vulnerables

CPE Desde Hasta
cpe:2.3:a:langfuse:langfuse:*:*:*:*:*:*:*:* 3.68.0 (incluyendo) 3.167.0 (excluyendo)