CVE-2026-55446
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.0.19, an attacker can send a /api/v1/files/upload/ request without any authentication token/cookies and abuse a very long multipart form boundary to make the langflow app unusable for all users for an indefinite amount of time. This vulnerability is fixed in 1.0.19.
- Affected products
- Langflow
- Langflow
- < 1.0.19
- Fix
- Available
- CVSS 3.1
- 7.5 HIGH
- EPSS
- 0.3% (27th percentile)
- Weakness
- CWE-400
- NVD status
- Analyzed
- Published
- 2026-06-23
CVE-2026-55446 at NVD
No indexed exploits for CVE-2026-55446 yet
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No exploit for CVE-2026-55446 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.