CVE-2026-10140 PUBLISHED

Cross-Tenant API Key Reuse and Billing Fraud in Langflow Voice Mode Subsystem

Assigner: ibm
Reserved: 29.05.2026 Published: 30.06.2026 Updated: 01.07.2026

IBM Langflow OSS 1.0.0 through 1.10.0 voice mode contains improper shared-state handling that allows reuse of API clients across tenant boundaries. An authenticated attacker can manipulate cache state to cause requests from other users to be processed using incorrect upstream API credentials, leading to cross-tenant billing and accountability misattribution.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CVSS Score: 9.6

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

CVSS 3.1

Product Status

Vendor	IBM
Product	Langflow OSS
Versions	affected from 1.0.0 to 1.10.0 (incl.)

Solutions

IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.10.1 https://pypi.org/project/langflow/

References

https://www.ibm.com/support/pages/node/7278209

Problem Types

CWE-639 Authorization Bypass Through User-Controlled Key CWE