CVE-2025-9799

5.0 MEDIUM
Published: September 01, 2025 Modified: December 02, 2025

Description

A security flaw has been discovered in Langfuse up to 3.88.0. Affected by this vulnerability is the function promptChangeEventSourcing of the file web/src/features/prompts/server/routers/promptRouter.ts of the component Webhook Handler. Performing manipulation results in server-side request forgery. The attack may be initiated remotely. A high degree of complexity is needed for the attack. The exploitation appears to be difficult. The exploit has been released to the public and may be exploited.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/langfuse/langfuse/issues/8522
Source: cna@vuldb.com
Exploit Issue Tracking
https://github.com/langfuse/langfuse/issues/8522#issue-3320549867
Source: cna@vuldb.com
Exploit Issue Tracking
https://vuldb.com/?ctiid.322114
Source: cna@vuldb.com
Permissions Required VDB Entry
https://vuldb.com/?id.322114
Source: cna@vuldb.com
Third Party Advisory VDB Entry
https://vuldb.com/?submit.641128
Source: cna@vuldb.com
Third Party Advisory VDB Entry

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.0 / 10.0
EPSS (Exploit Probability)
0.1%
18th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

langfuse