CVE catalog
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
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.58% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | langflow | Not reported | 1.0.19 | fixed |
| Cpe | langflow | Not reported | 1.0.19 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | langflow | cpe | Not reported | 1.0.19 | Not reported | Not reported | Not reported |
| Cpe | langflow | cpe | Not reported | 1.0.19 | Not reported | NVD-CVE-2026-55446 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://github.com/langflow-ai/langflow/pull/3923]
- [https://github.com/langflow-ai/langflow/security/advisories/GHSA-qwqc-p3q8-wcg9]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-55446]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2030.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)]