Account Takeover Vulnerability in Langfuse by Langfuse
CVE-2025-65107

6.5MEDIUM

Key Information:

Vendor

Langfuse

Status
Langfuse
Vendor
CVE Published:
21 November 2025

What is CVE-2025-65107?

Langfuse, an open-source platform for large language model engineering, is susceptible to an account takeover risk. This vulnerability affects versions 2.95.0 through 2.95.11 and 3.17.0 through 3.130.9 due to insufficient configuration settings for SSO providers. If an authenticated user is tricked into clicking a malicious URL, an attacker could exploit this weakness, leading to potential unauthorized access. The issue has been resolved in newer releases (2.95.12 and 3.131.0), with recommended measures including an explicit setting for AUTH__CHECK to mitigate risks.

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Affected Version(s)

langfuse >= 2.95.0, < 2.95.12 < 2.95.0, 2.95.12

langfuse >= 3.17.0, < 3.131.0 < 3.17.0, 3.131.0

References

https://github.com/langfuse/langfuse/security/advisories/...
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CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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