CVE-2025-59305

Name: CVE-2025-59305
Creator: NVD / NIST
Published: 2025-09-24T18:15:42.107+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.6/10EPSS 0.26%

Last modified Jun 17, 2026

CVE-2025-59305 is a high-severity vulnerability rated 7.6/10 on the CVSS scale. Improper authorization in the background migration endpoints of Langfuse 3.1 before d67b317 allows any authenticated user to invoke migration control functions. This can lead to data corruption or denial of service through unauthorized access to TRPC endpoints such as backgroundMigrations.all, backgroundMigrations.status, and backgroundMigrations.retry.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

Improper authorization in the background migration endpoints of Langfuse 3.1 before d67b317 allows any authenticated user to invoke migration control functions. This can lead to data corruption or denial of service through unauthorized access to TRPC endpoints such as backgroundMigrations.all, backgroundMigrations.status, and backgroundMigrations.retry.

Metrics

CVSS 3.1

7.6/10

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

EPSS Probability

0.26%

16.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-285

Affected Software

Vendor	Product	Versions
Langfuse	Langfuse	>= 3.1.0, < 3.109.0

References

https://depthfirst.com/post/how-an-authorization-flaw-reveals-a-common-security-blind-spot-cve-2025-59305-case-studyExploit, Third Party Advisory

Timeline

Published: Sep 24, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-59305?

How severe is CVE-2025-59305?

CVE-2025-59305 has a CVSS score of 7.6/10 (HIGH severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.

How do I fix CVE-2025-59305?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-59305?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST