CriticalVulnerability

CVE-2026-10140: IBM Langflow OSS voice mode cross-tenant API client reuse

Source: NVD(opens in a new tab)
Identifier: CVE-2026-10140
Published: June 30, 2026
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

CVE-2026-10140 affects IBM Langflow OSS versions 1.0.0 through 1.10.0 in voice mode. Improper shared-state handling allows reuse of API clients across tenant boundaries, so an authenticated attacker can manipulate cache state. Requests from other users may then be processed with incorrect upstream API credentials, causing cross-tenant billing and accountability misattribution. The weakness is classified as CWE-639, Authorization Bypass Through User-Controlled Key.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

CVSS score: 9.6(critical)
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Attack vector: network
Attack complexity: low
Privileges required: low
User interaction: none
EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 12, 2026.
Disclosure date: June 30, 2026

Weaknesses and techniques

Weakness (CWE): CWE-639

Classification

Attack type: Other
Attack sophistication: Moderate
AI component targeted: API
Impact: Confidentiality,
Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-10140

First tracked: June 30, 2026 at 08:09 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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