CVE-2026-13435: IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sandbox impl
Summary
IBM Langflow OSS (open-source software) versions 1.0.0 through 1.10.1 has a vulnerability in its PythonREPL sandbox implementation where it doesn't properly validate user input, potentially allowing code injection (inserting malicious code into a program). This could allow attackers to execute arbitrary code through the affected sandbox component.
Vulnerability Details
9.9(critical)
EPSS: 0.0%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
network
low
low
none
July 30, 2026
Classification
Affected Vendors
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Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-13435
First tracked: July 31, 2026 at 02:07 AM
Classified by LLM (prompt v3) · confidence: 92%