CVSS 4.0
8.8 highCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:PCVE-2026-21445
High (8.8) in langflow langflow. EPSS 33% chance of exploitation in the next 30 days. Fixed in langflow-base 0.7.1.
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal data and system operations that should require proper authorization. Version 1.7.0.dev45 contains a patch.
Severity
CVSS 3.1
9.1 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N- EPSS
- 33% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
- CWE
- CWE-306
- Published
- Modified
- Record from
- the NVD, synced
Affected
- langflow:langflow
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-c5cp-vx83-jhqx | PyPI | langflow-base | <0.7.1 | 0.7.1 |
| GHSA-c5cp-vx83-jhqx | PyPI | langflow | <1.7.1 | 1.7.1 |
| PYSEC-2026-1524 | PyPI | langflow | <1.7.1 | 1.7.1 |
| PYSEC-2026-2571 | PyPI | langflow-base | <0.7.1 | 0.7.1 |