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9.1

IBM Langflow OSS: Unauthenticated Access to Build Data and Jobs

CVE-2026-10560 · published 4 months ago
Summary

IBM Langflow OSS versions 1.0.0 through 1.9.6 have a security flaw that allows unauthorized access to sensitive build data and job information. This can lead to unauthorized job cancellations and data disclosure. To fix this, update to a newer version of IBM Langflow OSS.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
langflow langflow >= 1.0.0, <= 1.9.6
cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*
Original advisory text
IBM Langflow OSS 1.0.0 through 1.9.6 contains a missing authentication vulnerability in /api/v1/build_public_tmp/ endpoints that allows an unauthenticated attacker to read build event data or cance...
IBM Langflow OSS 1.0.0 through 1.9.6 contains a missing authentication vulnerability in /api/v1/build_public_tmp/ endpoints that allows an unauthenticated attacker to read build event data or cancel jobs using a valid job identifier, resulting in information disclosure and denial of service.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker partial control
Severity
9.1 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-287Improper Authentication
Timeline
Published30 Jun 2026
Updated4 Nov 2026
First seen30 Jun 2026
Sources
CVE-2026-10560 · NVD
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