Vulnerability · Published Nov 21, 2025 · Assigned by GitHub_M

CVE-2025-65107Langfuse SSO Account Takeover via CSRF or phishing attack

Medium 6.5

In plain English

A medium-severity cross-site request forgery in langfuse from langfuse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 94.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 products (as reported)

Vendor	Product	Versions
langfuse	langfuse	>= 2.95.0, < 2.95.12>= 3.17.0, < 3.131.0

Weakness: CWE-352, CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

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