Vulnerability in Langfuse

CVE-2026-41487

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 rol…

EPSS: 0.000 (11.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

  • Langfuse — versions >= 3.68.0, < 3.167.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-41487?
CVE-2026-41487 is a medium-severity vulnerability in Langfuse, classified under Improper Access Control. CVSS score: 5.4/10. Published 2026-05-08.
How severe is CVE-2026-41487?
Medium severity. CVSS v3 base score is 5.4 out of 10.