Is there a public exploit for CVE-2025-64504?

No public exploit for CVE-2025-64504 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2025-64504?

CVE-2025-64504 scores CVSS 5 (v3.1), rated medium. EPSS puts the chance of exploitation in the next 30 days at 0.34%.

What does CVE-2025-64504 affect?

CVE-2025-64504 affects langfuse Langfuse.

5.0 Medium

Langfuse is an open source large language model engineering platform.

CVE-2025-64504

Langfuse is an open source large language model engineering platform. Starting in version 2.70.0 and prior to versions 2.95.11 and 3.124.1, in certain project membership APIs, the server trusted a user‑controlled orgId and used it in authorization checks. As a result, any authenticated user on the same Langfuse instance could enumerate names and email addresses of users in another organization if they knew the target organization’s ID. Disclosure is limited to names and email addresses of members/invitees. No customer data such as traces, prompts, or evaluations is exposed or accessible. For Langfuse Cloud, the maintainers ran a thorough investigation of access logs of the last 30 days and could not find any evidence that this vulnerability was exploited. For most self-hosting deployments, the attack surface is significantly reduced given an SSO provider is configured and email/password sign-up is disabled. In these cases, only users who authenticate via the Enterprise SSO IdP (e.g. Okta) would be able to exploit this vulnerability to access the member list, i.e. internal users getting access to a list of other internal users. In order to exploit the vulnerability, the actor must…

Assessment

CVSS: 5 (v3.1)
Severity: Medium
EPSS: 0.34% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 10 November 2025
Last updated: 17 June 2026
Affected: langfuse · Langfuse
Weakness: CWE-202
Assigner: security-advisories@github.com

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

At the source

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