CVE-2025-65107

Langfuse SSO Account Takeover via CSRF or phishing attack

MEDIUM
6.5
CVSS Score
Published: November 21, 2025 at 09:49 PM UTC
Updated: October 19, 2026 at 01:10 PM UTC
1 product affected across 1 vendorLangfuse

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.95.0 ≤ v < 2.95.123.17.0 ≤ v < 3.131.0
Affected range stops below 2.95.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.131.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

x_refsource_CONFIRMMitigationVendor Advisory
Source: cverecord
https://github.com/langfuse/langfuse/security/advisories/GHSA-w9pw-c549-5m6w

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-352CWE-285

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