Critical 9.6Published Jun 30, 2026

CVE-2026-10140Cross-Tenant API Key Reuse and Billing Fraud in Langflow Voice Mode Subsystem

Updated under an hour ago (Oct 25, 2026, 9:10 PM ET)

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It affects IBM Langflow OSS and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for IBM Langflow OSS

Exploited in the last 30 days

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.

CVSS: 9.6 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: ibm
NVD analysis: Analyzed
Record last updated: Aug 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

IBM Langflow OSS ibm:langflow_oss	from 1.0.0 through 1.10.0	CNA record
langflow langflow langflow:langflow	from 1.0.0 through 1.10.0	NVD

References

https://www.ibm.com/support/pages/node/7278209vendor-advisory, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.