What is CVE-2026-0771?

CVE-2026-0771 is a high-severity vulnerability in Langflow, classified under Code Injection. CVSS score: 7.1/10. Published 2026-01-23.

How severe is CVE-2026-0771?

High severity. CVSS v3 base score is 7.1 out of 10.

RCE in Langflow

CVE-2026-0771

Langflow PythonFunction Code Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Attack vectors and exploitability will vary depending on the configuration of the product. The specific flaw exists within the handling of Python function components. Depending upon product configuration, an attacker may be able to introduce custom Python code into a workflow. An attacker can leverage this vulnerability to execute code in the context of the application. Was ZDI-CAN-27497.

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.006 (42.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H.

Affected products

Langflow — versions 1.4.2

Weakness classification (CWE)

CWE-94 — Code Injection

References

zdi-disclosures@trendmicro.com (x_research-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2026-0771?: CVE-2026-0771 is a high-severity vulnerability in Langflow, classified under Code Injection. CVSS score: 7.1/10. Published 2026-01-23.
How severe is CVE-2026-0771?: High severity. CVSS v3 base score is 7.1 out of 10.