CVE-2026-7754 in Langflow OSS
Summary
by MITRE • 07/17/2026
IBM Langflow OSS 1.0.0 through 1.10.0 Langflow 1.9.0 could allow server-side request forgery (SSRF) due to insecure default configuration and incomplete enforcement of the SSRF protection mechanism.
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Analysis
by VulDB Data Team • 07/17/2026
IBM Langflow Open Source Software versions 1.0.0 through 1.10.0 including the specific 1.9.0 release contains a critical server-side request forgery vulnerability that stems from insecure default configurations and inadequate enforcement of security protections. This vulnerability allows attackers to manipulate the application's ability to make outbound requests to internal or external systems, potentially enabling unauthorized access to backend services, data exfiltration, or further exploitation of network infrastructure. The flaw manifests through improper validation of user-supplied input that is used to construct HTTP requests, combined with default configurations that fail to adequately restrict outbound communication channels.
The technical implementation of this vulnerability involves the application's failure to properly sanitize and validate URLs or endpoints provided by users during workflow execution or configuration processes. When Langflow processes user-defined inputs for external API calls, network requests, or data retrieval operations, it does not sufficiently validate these inputs against known attack patterns or internal network boundaries. This incomplete SSRF protection mechanism creates opportunities for malicious actors to craft requests that bypass intended security controls and access internal resources that should remain isolated from external networks. The vulnerability operates at the application layer and can be exploited through various attack vectors including direct input manipulation, workflow configuration tampering, or API endpoint abuse.
The operational impact of this vulnerability extends beyond simple unauthorized network access, potentially enabling attackers to perform reconnaissance activities against internal systems, extract sensitive data from backend services, or establish persistent access points through lateral movement. An attacker could leverage this vulnerability to probe internal network segments, access databases or other backend services that are not directly exposed to the internet, and potentially escalate privileges within the compromised environment. The default insecure configurations mean that organizations deploying these versions without proper security hardening may be immediately vulnerable upon deployment, creating a significant risk for production environments where Langflow is used for workflow automation or data processing tasks.
Organizations should immediately implement mitigations including comprehensive input validation for all user-supplied URLs and endpoints, enforcement of strict outbound network access controls, and implementation of network segmentation to isolate Langflow deployments from critical internal systems. Security teams should review and update default configurations to ensure that outbound requests are properly restricted and validated against approved domains or IP ranges. The vulnerability aligns with CWE-918 Server-Side Request Forgery and follows attack patterns documented in the ATT&CK framework under TA0011 Command and Control and TA0006 Credential Access, where adversaries establish persistent access through exploitation of insecure configurations and network traversal techniques. Regular security assessments and network monitoring should be implemented to detect potential exploitation attempts and ensure that all systems are updated to patched versions where available.