Home/CVE/A security flaw has been discovered in Langfuse up to 3.88.0. Affected by this vulnerability is the function promptChang
CVE

CVE-2025-9799

A security flaw has been discovered in Langfuse up to 3.88.0. Affected by this vulnerability is the function promptChang

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.

MEDIUM · CVSS 5 EPSS 0.00065
Schedule remediation
  • Public exploit or PoC is available
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-918Server-Side Request Forgery (SSRF)
▤

Affected Products & Versions

1
langfuse<= 3.88.0
⚠

Public Exploits & PoCs

2
pocgithub.com · 8522github.com
pocgithub.com · 8522#issue-3320549867github.com
▣

Scoring & Timeline

5
MEDIUM · CVSS v3.1 · cna@vuldb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Sep 2025 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://vuldb.com/?ctiid.322114Permissions RequiredVDB Entry
https://vuldb.com/?id.322114Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.641128Third Party AdvisoryVDB Entry
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