Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, unauthenticated users can upload any amount of data to the server without any limitations. No need for any prior knowledge, only network access to Langflow. This can lead to space exhaustion on the server. In addition, in the response, the absolute path of the uploaded file is reported to the attacker, which is an information leak that can assist in chaining other primitives. This vulnerability is fixed in 1.9.1.
Project Subscriptions
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Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-x223-p2gf-v735 | Langflow: Unauthenticated file upload leads to DoS (space exhaustion) and information leak |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 23 Jun 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Tue, 23 Jun 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, unauthenticated users can upload any amount of data to the server without any limitations. No need for any prior knowledge, only network access to Langflow. This can lead to space exhaustion on the server. In addition, in the response, the absolute path of the uploaded file is reported to the attacker, which is an information leak that can assist in chaining other primitives. This vulnerability is fixed in 1.9.1. | |
| Title | Langflow: Unauthenticated file upload leads to DoS (space exhaustion) and information leak | |
| Weaknesses | CWE-200 CWE-306 CWE-400 |
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| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-06-23T17:02:55.053Z
Reserved: 2026-06-16T21:59:57.018Z
Link: CVE-2026-55450
Updated: 2026-06-23T17:01:03.861Z
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OpenCVE Enrichment
No data.
Github GHSA