Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Network-reachable, no auth (PR:N) and no interaction against the default config; AC:L retained despite the UUID requirement, with full CIA impact via flow-driven RCE on the unchanged host scope.
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).
AnalysisAI
Unauthenticated remote code execution in IBM Langflow OSS 1.0.0 through 1.10.0 stems from broken webhook authentication that skips API key validation whenever WEBHOOK_AUTH_ENABLE is False - which is the shipped default. Any remote attacker who learns a flow's UUID can invoke that flow's webhook endpoint as though they were its owner, running arbitrary flow logic and reaching RCE. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target run IBM Langflow OSS 1.0.0-1.10.0 with the WEBHOOK_AUTH_ENABLE configuration set to False - which is the DEFAULT, so no attacker-controlled reconfiguration is needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine high priority, not a paper tiger. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained a target flow's UUID - for example harvested from a leaked URL, log entry, or shared workspace export - sends a crafted HTTP POST to that flow's webhook endpoint on an internet-exposed Langflow instance running the default configuration. Because WEBHOOK_AUTH_ENABLE is False, the server skips API key validation and executes the flow as its owner; if the flow contains code-execution components, this yields arbitrary code execution on the host. … |
| Remediation | Patch available per vendor advisory - upgrade IBM Langflow OSS to the fixed release identified in IBM's advisory at https://www.ibm.com/support/pages/node/7278921 (consult that page for the exact patched version, which was not enumerated in the source data, so do not assume a version number). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all IBM Langflow OSS instances in your environment, identify those running versions 1.0.0 through 1.10.0, and prioritize instances handling sensitive or production data. …
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