CVE-2026-10561

Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection

Published Jun 22, 2026 CVSS 3.1 · 10 Critical EPSS < 1% KEV · Not listed
Description
IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.9.4 https://pypi.org/project/langflow/

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8qpj-27x8-pwpq Langflow: PythonREPLComponent executes unsandboxed Python code, enabling authenticated RCE and privilege escalation
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise
Title Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection
First Time appeared Ibm
Ibm langflow Oss
Weaknesses CWE-94
CPEs cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:langflow_oss:1.9.3:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm langflow Oss
References
Metrics cvssV3_1

{'score': 10, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
Jun 23, 2026, 6:48 PM
Reserved
Jun 1, 2026, 3:41 PM
Status
Analyzed
Published
Jun 22, 2026, 2:16 PM
Modified
Oct 25, 2026, 11:10 PM