Is there a public exploit for CVE-2026-10561?

No public exploit for CVE-2026-10561 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-10561?

CVE-2026-10561 scores CVSS 10 (v3.1), rated critical. EPSS puts the chance of exploitation in the next 30 days at 0.82%.

What does CVE-2026-10561 affect?

CVE-2026-10561 affects IBM langflow. It is part of the AI and agent stack (Langflow).

10.0 Critical

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…

CVE-2026-10561

Summary Langflow's built-in Python interpreter components — PythonREPLComponent (Python Interpreter) and the legacy PythonREPLToolComponent (Python REPL Tool) — executed arbitrary user- or model-supplied Python code inside flows without effective sandboxing. Because the code ran in-process with the privileges of the Langflow service, any authenticated user who could edit and run a flow could achieve remote code execution and, from there, escalate privileges to superuser (e.g. by opening a database session and flipping issuperuser) or compromise the host. This issue is fixed as of 1.10.1, with additional hardening through 1.12.3. See Remediation below. Affected Package: langflow (PyPI), and the underlying lfx package that ships the component. Vulnerable versions: = 1.12.3 for the complete hardening series. Details The root cause is code injection (CWE-94/CWE-95): the component passed raw input to LangChain's PythonREPL, which is explicitly not a security sandbox. Two distinct weaknesses existed before 1.10.1: 1. Unrestricted builtins (default deployments). getglobals() built the exec globals from the globalimports allow-list but never set builtins. CPython's exec() then…

Part of the AI stack

This affects Langflow, in Agent frameworks.

Assessment

CVSS: 10 (v3.1)
Severity: Critical
EPSS: 0.82% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 22 June 2026
Last updated: 25 October 2026
Affected: IBM · Langflow OSS · langflow
Weakness: CWE-266, CWE-94, CWE-95
Assigner: psirt@us.ibm.com

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

At the source

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