Langfuse Webhook promptRouter.ts promptChangeEventSourcing server-side request forgery

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2025-9799
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-09-01 22:15:31 UTC
Updated2026-04-29 01:00:01 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 1.3 LOW from [email protected]

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-918 | CWE-918 Server-Side Request Forgery

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary1.3LOWCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED2.3LOWCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
3.1[email protected]Secondary5MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED5MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
3.0CNADECLARED5MEDIUMCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
2.0[email protected]Secondary4.6AV:N/AC:H/Au:S/C:P/I:P/A:P
2.0CNADECLARED4.6AV:N/AC:H/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

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

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Langfuse Langfuse All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Langfuse affected 3.0 Not specified
CNA Na Langfuse affected 3.1 Not specified
CNA Na Langfuse affected 3.2 Not specified
CNA Na Langfuse affected 3.3 Not specified
CNA Na Langfuse affected 3.4 Not specified
CNA Na Langfuse affected 3.5 Not specified
CNA Na Langfuse affected 3.6 Not specified
CNA Na Langfuse affected 3.7 Not specified
CNA Na Langfuse affected 3.8 Not specified
CNA Na Langfuse affected 3.9 Not specified
CNA Na Langfuse affected 3.10 Not specified
CNA Na Langfuse affected 3.11 Not specified
CNA Na Langfuse affected 3.12 Not specified
CNA Na Langfuse affected 3.13 Not specified
CNA Na Langfuse affected 3.14 Not specified
CNA Na Langfuse affected 3.15 Not specified
CNA Na Langfuse affected 3.16 Not specified
CNA Na Langfuse affected 3.17 Not specified
CNA Na Langfuse affected 3.18 Not specified
CNA Na Langfuse affected 3.19 Not specified
CNA Na Langfuse affected 3.20 Not specified
CNA Na Langfuse affected 3.21 Not specified
CNA Na Langfuse affected 3.22 Not specified
CNA Na Langfuse affected 3.23 Not specified
CNA Na Langfuse affected 3.24 Not specified
CNA Na Langfuse affected 3.25 Not specified
CNA Na Langfuse affected 3.26 Not specified
CNA Na Langfuse affected 3.27 Not specified
CNA Na Langfuse affected 3.28 Not specified
CNA Na Langfuse affected 3.29 Not specified
CNA Na Langfuse affected 3.30 Not specified
CNA Na Langfuse affected 3.31 Not specified
CNA Na Langfuse affected 3.32 Not specified
CNA Na Langfuse affected 3.33 Not specified
CNA Na Langfuse affected 3.34 Not specified
CNA Na Langfuse affected 3.35 Not specified
CNA Na Langfuse affected 3.36 Not specified
CNA Na Langfuse affected 3.37 Not specified
CNA Na Langfuse affected 3.38 Not specified
CNA Na Langfuse affected 3.39 Not specified
CNA Na Langfuse affected 3.40 Not specified
CNA Na Langfuse affected 3.41 Not specified
CNA Na Langfuse affected 3.42 Not specified
CNA Na Langfuse affected 3.43 Not specified
CNA Na Langfuse affected 3.44 Not specified
CNA Na Langfuse affected 3.45 Not specified
CNA Na Langfuse affected 3.46 Not specified
CNA Na Langfuse affected 3.47 Not specified
CNA Na Langfuse affected 3.48 Not specified
CNA Na Langfuse affected 3.49 Not specified
CNA Na Langfuse affected 3.50 Not specified
CNA Na Langfuse affected 3.51 Not specified
CNA Na Langfuse affected 3.52 Not specified
CNA Na Langfuse affected 3.53 Not specified
CNA Na Langfuse affected 3.54 Not specified
CNA Na Langfuse affected 3.55 Not specified
CNA Na Langfuse affected 3.56 Not specified
CNA Na Langfuse affected 3.57 Not specified
CNA Na Langfuse affected 3.58 Not specified
CNA Na Langfuse affected 3.59 Not specified
CNA Na Langfuse affected 3.60 Not specified
CNA Na Langfuse affected 3.61 Not specified
CNA Na Langfuse affected 3.62 Not specified
CNA Na Langfuse affected 3.63 Not specified
CNA Na Langfuse affected 3.64 Not specified
CNA Na Langfuse affected 3.65 Not specified
CNA Na Langfuse affected 3.66 Not specified
CNA Na Langfuse affected 3.67 Not specified
CNA Na Langfuse affected 3.68 Not specified
CNA Na Langfuse affected 3.69 Not specified
CNA Na Langfuse affected 3.70 Not specified
CNA Na Langfuse affected 3.71 Not specified
CNA Na Langfuse affected 3.72 Not specified
CNA Na Langfuse affected 3.73 Not specified
CNA Na Langfuse affected 3.74 Not specified
CNA Na Langfuse affected 3.75 Not specified
CNA Na Langfuse affected 3.76 Not specified
CNA Na Langfuse affected 3.77 Not specified
CNA Na Langfuse affected 3.78 Not specified
CNA Na Langfuse affected 3.79 Not specified
CNA Na Langfuse affected 3.80 Not specified
CNA Na Langfuse affected 3.81 Not specified
CNA Na Langfuse affected 3.82 Not specified
CNA Na Langfuse affected 3.83 Not specified
CNA Na Langfuse affected 3.84 Not specified
CNA Na Langfuse affected 3.85 Not specified
CNA Na Langfuse affected 3.86 Not specified
CNA Na Langfuse affected 3.87 Not specified
CNA Na Langfuse affected 3.88.0 Not specified

References

ReferenceSourceLinkTags
github.com/langfuse/langfuse/issues/8522 [email protected] github.com Exploit, Issue Tracking
github.com/langfuse/langfuse/issues/8522 [email protected] github.com Exploit, Issue Tracking
vuldb.com [email protected] vuldb.com Permissions Required, VDB Entry
vuldb.com [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com [email protected] vuldb.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: ZAST.AI (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2025-09-01T00:00:00.000ZAdvisory disclosed
CNA2025-09-01T02:00:00.000ZVulDB entry created
CNA2025-09-01T14:29:18.000ZVulDB entry last update
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