CVE-2025-9799 Details
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.
A server-side request forgery (SSRF) vulnerability has been identified in Langfuse versions through 3.88.0. The issue arises in the Webhook Handler component, specifically within the 'promptChangeEventSourcing' function of 'web/src/features/prompts/server/routers/promptRouter.ts'. This vulnerability allows remote attackers to manipulate user-controlled URI parameters, potentially probing and exploiting internal services of the target system.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 2, 2025References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/langfuse/langfuse/issues/8522 | [email protected] | ExploitIssue Tracking |
| https://github.com/langfuse/langfuse/issues/8522#issue-3320549867 | [email protected] | ExploitIssue Tracking |
| https://vuldb.com/?ctiid.322114 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.322114 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.641128 | [email protected] | Third Party AdvisoryVDB Entry |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-918 | Server-Side Request Forgery (SSRF) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| langfuse langfuse | <= 3.88.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Data Remediation | [email protected] |
| Dec 2, 2025 | Initial Analysis | [email protected] |
| Sep 1, 2025 | New CVE Received | [email protected] |