CVE-2026-8481CWE-94

Remote Code Execution via Code Validation Endpoint

Critical · published July 17, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
58.6
In the wild
Unconfirmed
What it is

IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the code validation API endpoint. The POST /api/v1/validate/code endpoint accepts user-supplied Python code and executes it directly using Python's built-in exec() function without sandboxing, input validation, or privilege restrictions, enabling any authenticated user to execute arbitrary system commands with the full privileges of the Langflow server process.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00875 · 58.6th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-07-17T19:10Z
EPSS history
Timeline
  • 17 JUL 19:10Z
    Remote Code Execution via Code Validation Endpoint
    cvelistv5