Remote Code Execution Vulnerability in Langflow by Root
CVE-2026-0770
Key Information:
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What is CVE-2026-0770?
CVE-2026-0770 is a remote code execution vulnerability found in the Langflow software developed by Root. This product serves as a framework for building and deploying applications, which means it can be integral to various business processes and operations. The vulnerability significantly undermines the security posture of organizations utilizing Langflow, as it enables attackers to execute arbitrary code with root privileges. The flaw lies in the handling of the exec_globals parameter within the validate endpoint. This mismanagement allows untrusted resources to be included, creating an opportunity for unauthorized access. Consequently, this vulnerability could lead to severe operational disruptions, data breaches, and an erosion of customer trust.
Potential impact of CVE-2026-0770
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Arbitrary Code Execution: The primary concern surrounding this vulnerability is its potential to allow malicious actors to execute arbitrary code on affected systems. This level of access can lead to extensive compromises, including data manipulation, unauthorized data access, and the ability to install malicious software.
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Privilege Escalation: Since the vulnerability provides attackers access in the context of the root user, this effectively means they can gain the highest level of privileges on the affected systems. Such access can facilitate further attacks and exploitation, possibly allowing the attacker to pivot to other systems within the network.
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Operational Disruption: Organizations relying on Langflow for critical applications may face significant operational impacts if this vulnerability is exploited. This can result in service outages, loss of productivity, and financial repercussions while the organization works to rectify the situation and secure their systems.
CISA has reported CVE-2026-0770
CISA provides regional cyber and physical services to support security and resilience across the United States. CISA monitor the most dangerious vulnerabilities and have identifed CVE-2026-0770 as being exploited but is not known by the CISA to be used in ransomware campaigns. This is subject to change at pace as recent news articles suggest the vulnerability is being used by ransomware groups.
The CISA's recommendation is: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Affected Version(s)
Langflow 1.4.2
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
News Articles
References
EPSS Score
62% chance of being exploited in the next 30 days.
CVSS V3.0
Timeline
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Used in Ransomware
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First article discovered by BleepingComputer
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CISA Reported
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Public PoC available
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Exploit known to exist
Vulnerability published
Vulnerability Reserved