CVE-2026-8481
Remote Code Execution via Code Validation Endpoint
- Published
- Jul 17, 2026
- Updated
- Jul 23, 2026
- Assigning CNA
- ibm
- Evidence observed
- Aug 28, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HLow · next 30 days
- Percentile
- 54.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
3- CVE-2026-9198_exploitExploit
Unauthenticated RCE exploit for Langflow OSS chaining auto_login JWT bypass with validate/code exec() to achieve remote command execution and reverse shells.
- cve-2026-9198_exploitExploit
Exploit for CVE-2026-9198, containing proof-of-concept payloads and validation steps for assessing the vulnerability in target environments.
- CVE-2026-9198Exploit
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