CVE-2026-12944 Incomplete Security Scanner Blocklist Enables Network-Based Code Execution
Attackers can execute arbitrary Python code with root privileges by bypassing the security scanner, leading to credential theft and lateral movement.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-12944?
CVE-2026-12944 is a critical code injection vulnerability in IBM Langflow OSS, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-918
Which versions are affected by CVE-2026-12944?
How do I fix CVE-2026-12944?
No fix has been published for CVE-2026-12944 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-12944 being exploited?
There is no known exploitation of CVE-2026-12944 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-277g-2342-m332.