CVE-2025-65107: langfuse Access Control Flaw — Fix

Description

Langfuse is an open source large language model engineering platform. In versions from 2.95.0 to before 2.95.12 and from 3.17.0 to before 3.131.0, in SSO provider configurations without an explicit AUTH_<PROVIDER>_CHECK setting, a potential account takeover may happen if an authenticated user is made to call a specifically crafted URL via a CSRF or phishing attack. This issue has been patched in versions 2.95.12 and 3.131.0. A workaround for this issue involves setting AUTH_<PROVIDER>_CHECK.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weakness Type (CWE)

CWE-285 CWE-285

CWE-352 Cross-Site Request Forgery

Affected Products

Vendor	Product	Versions
langfuse	langfuse	2.95.0 — 2.95.12
langfuse	langfuse	3.17.0 — 3.131.0

References

Advisories & Patches

https://github.com/langfuse/langfuse/security/advisories/GHSA-w9pw-c549-5m6w

Frequently Asked Questions

What is CVE-2025-65107? +

Langfuse is an open source large language model engineering platform. In versions from 2.95.0 to before 2.95.12 and from 3.17.0 to before 3.131.0, in SSO provider configurations without an explicit AUTH_<PROVIDER>_CHECK setting, a potential account takeover may happen if an authenticated user is made to call a specifically crafted URL via a CSRF or phishing attack. This issue has been patched in versions 2.95.12 and 3.131.0. A workaround for this issue involves setting AUTH_<PROVIDER>_CHECK. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-65107? +

CVE-2025-65107 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-65107? +

CVE-2025-65107 affects products from langfuse, specifically: langfuse. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-65107? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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