Python
CVE-2026-0769
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
Langflow eval_custom_component_code Eval Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the implementation of eval_custom_component_code function. The issue results from the lack of proper validation of a user-supplied string before using it to execute python code. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-26972.
AnalysisAI
Langflow has an eval injection in eval_custom_component_code (EPSS 2.0%) enabling remote code execution through crafted custom component definitions.
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions — remote unauthenticated exploitation against default Langflow installations with eval_custom_component_code function accessible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 9.8, EPSS 2.0%. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a custom component definition containing malicious Python code that Langflow evaluates, gaining full server access including LLM API keys and connected database credentials. |
| Remediation | Update Langflow. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all Langflow installations in your environment and assess exposure to untrusted networks. …
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