CVE-2026-12944 PUBLISHED

Incomplete Security Scanner Blocklist Enables Network-Based Code Execution

Assigner: ibm
Reserved: 22.06.2026 Published: 14.09.2026 Updated: 16.09.2026

IBM Langflow OSS 1.0.0 through 1.10.0 can allow attackers to execute arbitrary Python code with root privileges (UID=0) on the Langflow server by submitting components containing socket or urllib imports. This enables: (1) AWS credential theft via IMDSv1 SSRF with full IAM role permissions, (2) arbitrary file exfiltration from the container filesystem, and (3) lateral movement to internal services (PostgreSQL, Redis) within the Docker network. The scanner incorrectly returns "validated": true, providing a false security signal.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CVSS Score: 9.6

Product Status

Vendor IBM
Product Langflow OSS
Versions Default: unaffected
  • affected from 1.0.0 to 1.10.0 (incl.)

Solutions

IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.10.1 https://pypi.org/project/langflow/

Credits

  • CVE-2026-12944 was reported to IBM by KIM MINJUN (GitHub: 31n6). reporter

References

Problem Types

  • CWE-918 Server-Side Request Forgery (SSRF) CWE