CVE-2026-81204
IBM Langflow OSS versions 1.0.0 through 1.11.5 are vulnerable to code injection during graph construction. A remote attacker can run arbitrary code on the host. The flaw is severe because it requires no authentication or user interaction.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
IBM Langflow OSS 1.0.0–1.11.5, used by developers building AI workflows.
Real-world impact
An attacker could execute any code on the machine running Langflow, potentially taking full control of the system, exfiltrating data, or installing malware.
Why this severity
The CVSS score of 9.8 reflects that the vulnerability is exploitable over the network, requires no user interaction, and grants complete control over confidentiality, integrity, and availability.
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources