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CRITICAL · 9.9

CVE-2026-13435

IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sandbox implementation.

Vulnerability Description

IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sandbox implementation.

CVSS Score

9.9

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
LangflowLangflow>= 1.0.0, < 1.10.2

Related Weaknesses (CWE)

CWE-94

References

FAQ

What is CVE-2026-13435?

CVE-2026-13435 is a vulnerability with a CVSS score of 9.9 (CRITICAL). IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sandbox implementation.

How severe is CVE-2026-13435?

CVE-2026-13435 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-13435?

Check the references section above for vendor advisories and patch information. Affected products include: Langflow Langflow.