How severe is CVE-2025-65107?

CVE-2025-65107 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2025-65107 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-65107?

CVE-2025-65107 affects Langfuse. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-65107?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-65107 have an EU (EUVD) identifier?

Yes. CVE-2025-65107 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198512.

When was CVE-2025-65107 published?

CVE-2025-65107 was published on 2025-11-21 and last updated on 2026-06-17.

CVE-2025-65107

CVE-2025-65107 is a medium-severity vulnerability in Langfuse with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198512
Weakness: CWE-285
Affected product: Langfuse
Published: 2025-11-21
Last modified: 2026-06-17

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.

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.
How severe is CVE-2025-65107?: CVE-2025-65107 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2025-65107 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-65107?: CVE-2025-65107 affects Langfuse. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-65107?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-65107 have an EU (EUVD) identifier?: Yes. CVE-2025-65107 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198512.
When was CVE-2025-65107 published?: CVE-2025-65107 was published on 2025-11-21 and last updated on 2026-06-17.

References

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

Affected products (1)

cpe:2.3:a:langfuse:langfuse:*:*:*:*:*:*:*:*

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