Improper Input Validation in IBM Langflow OSS Affects Multiple Versions
CVE-2026-13435

9.9CRITICAL

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
30 July 2026

What is CVE-2026-13435?

IBM Langflow OSS versions 1.0.0 through 1.10.1 are exposed to an improper input validation vulnerability in the PythonREPL sandbox. This flaw may allow attackers to exploit the system improperly, posing risks to data integrity and security. Users are advised to review the vendor's advisory for patch details.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.10.1

References

https://www.ibm.com/support/pages/node/7279987
vendor-advisorypatch

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.