High severity · published Jan 23, 2026
CVE-2026-0771
Langflow PythonFunction Code Injection Remote Code Execution Vulnerability
7.1
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LA
Langflow · Langflow
1.4.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-0771
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-0771
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-26-037/
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