Authenticated arbitrary file write via unsanitized filename
Published Jul 17, 2026 · Updated Jul 17, 2026
Path traversal in IBM Langflow OSS 1.0.0 through 1.10.0 allows remote authenticated users to write files via malicious flow responses. With Save to File enabled, APIRequestComponent._response_info uses a response Content-Disposition filename verbatim under component_temp_dir without stripping traversal segments or checking containment. Running the crafted flow writes the endpoint's response body anywhere accessible to the Langflow process, enabling code execution when a startup or executable file is overwritten.
Summary
What happened
Path traversal in IBM Langflow OSS 1.0.0 through 1.10.0 allows remote authenticated users to write files via malicious flow responses. With Save to File enabled, APIRequestComponent._response_info uses a response Content-Disposition filename verbatim under component_temp_dir without stripping traversal segments or checking containment. Running the crafted flow writes the endpoint's response body anywhere accessible to the Langflow process, enabling code execution when a startup or executable file is overwritten.
The record
- CVE
- CVE-2026-7667
- Published
- Jul 17, 2026
- Updated
- Jul 17, 2026
- Vendor
- IBM
- Product
- Langflow OSS
- Classifications
- CWE-22, T1105
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 17, 2026CVE publishedPublication date reported by the CVE source.
- Jul 17, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=1.0.0 <=1.10.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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