CVE-2026-5027
Langflow - Path Traversal Arbitrary File Write via upload_user_file
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').
| CWE | CWE-22 |
| Vendor | langflow-ai |
| Product | langflow |
| Published | Mar 27, 2026 |
| Last Updated | Mar 27, 2026 |
Stay Ahead of the Next One
Get instant alerts for langflow-ai langflow
Be the first to know when new high vulnerabilities affecting langflow-ai langflow are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
langflow-ai / langflow
0