CVE-2025-9799
MEDIUMlangfuse < 3.88.0 - Server-Side Request Forgery via Webhook Handler
Title source: llmDescription
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.
References (5)
Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.322114
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.322114
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.641128
Exploit, Issue Tracking issue-tracking
https://github.com/langfuse/langfuse/issues/8522
Exploit, Issue Tracking exploit
issue-tracking
https://github.com/langfuse/langfuse/issues/8522#issue-3320549867
Scores
CVSS v3
5.0
EPSS
0.0026
EPSS Percentile
16.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-918
Status
published
Products (1)
langfuse/langfuse
< 3.88.0
Published
Sep 01, 2025
Tracked Since
Feb 18, 2026