CVE-2026-21445
CVE-2026-21445 · Langflow Missing Authentication on Critical API Endpoints
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.8 · High · EPSS 33.3% · Public exploit · Fix available
- Published
- Updated
Stack: python
Affected products and versions
langflow
- Versions
- < 1.7.0.dev45: Affected
No fix published
langflow-base PyPI
- Versions
- 0.0.13
- 0.0.14
- 0.0.15
- 0.0.16
- 0.0.17
- 0.0.18
- 0.0.19
- 0.0.20
- 0.0.21
- 0.0.22
- 0.0.23
- 0.0.24
- 0.0.25
- 0.0.26
- 0.0.27
- 0.0.28
- 0.0.29
- 0.0.30
- 0.0.31
- 0.0.32
- 0.0.33
- 0.0.34
- 0.0.35
- 0.0.36
- 0.0.37
- 0.0.38
- 0.0.39
- 0.0.40
- 0.0.41
- 0.0.42
- 0.0.43
- 0.0.44
- 0.0.45
- 0.0.46
- 0.0.47
- 0.0.48
- 0.0.49
- 0.0.50
- 0.0.51
- 0.0.52
- 0.0.53
- 0.0.54
- 0.0.55
- 0.0.56
- 0.0.57
- 0.0.58
- 0.0.59
- 0.0.60
- 0.0.61
- 0.0.62
- 0.0.63
- 0.0.64
- 0.0.66
- 0.0.67
- 0.0.68
- 0.0.69
- 0.0.70
- 0.0.71
- 0.0.72
- 0.0.73
- 0.0.74
- 0.0.75
- 0.0.76
- 0.0.77
- 0.0.78
- 0.0.79
- 0.0.80
- 0.0.81
- 0.0.82
- 0.0.83
- 0.0.84
- 0.0.85
- 0.0.86
- 0.0.87
- 0.0.88
- 0.0.89
- 0.0.90
- 0.0.91
- 0.0.92
- 0.0.93
- 0.0.94
- 0.0.95
- 0.0.96
- 0.0.97
- 0.0.98
- 0.0.99
- 0.1.0
- 0.1.1
- 0.1.2
- 0.1.3
- 0.1.4
- 0.1.4.post1
- 0.2.0
- 0.3.0
- 0.3.1
- 0.3.2
- 0.3.3
- 0.3.4
- 0.4.0
- 0.4.1
- 0.4.2
- 0.4.3
- 0.5.0
- 0.5.0.post1
- 0.5.0.post2
- 0.5.1
- 0.6.0
- 0.6.1
- 0.6.2
- 0.6.3
- 0.6.4
- 0.6.5
- 0.6.6
- 0.6.7
- 0.6.8
- 0.6.9
- 0.7.0
- Affected ranges
- ECOSYSTEM: < 0.7.1
Update to 0.7.1
langflow PyPI
- Versions
- 0.0.31
- 0.0.32
- 0.0.33
- 0.0.40
- 0.0.44
- 0.0.45
- 0.0.46
- 0.0.52
- 0.0.53
- 0.0.54
- 0.0.55
- 0.0.56
- 0.0.57
- 0.0.58
- 0.0.61
- 0.0.62
- 0.0.63
- 0.0.64
- 0.0.65
- 0.0.66
- 0.0.67
- 0.0.68
- 0.0.69
- 0.0.70
- 0.0.71
- 0.0.72
- 0.0.73
- 0.0.74
- 0.0.75
- 0.0.76
- 0.0.78
- 0.0.79
- 0.0.80
- 0.0.81
- 0.0.83
- 0.0.84
- 0.0.85
- 0.0.86
- 0.0.87
- 0.0.88
- 0.0.89
- 0.1.0
- 0.1.2
- 0.1.3
- 0.1.4
- 0.1.5
- 0.1.6
- 0.1.7
- 0.2.0
- 0.2.1
- 0.2.10
- 0.2.11
- 0.2.12
- 0.2.13
- 0.2.2
- 0.2.3
- 0.2.4
- 0.2.5
- 0.2.6
- 0.2.7
- 0.2.8
- 0.2.9
- 0.3.0
- 0.3.1
- 0.3.2
- 0.3.3
- 0.3.4
- 0.4.0
- 0.4.1
- 0.4.10
- 0.4.11
- 0.4.12
- 0.4.14
- 0.4.15
- 0.4.16
- 0.4.17
- 0.4.18
- 0.4.19
- 0.4.2
- 0.4.20
- 0.4.21
- 0.4.3
- 0.4.4
- 0.4.5
- 0.4.6
- 0.4.7
- 0.4.8
- 0.4.9
- 0.5.0
- 0.5.0a0
- 0.5.0a1
- 0.5.0a2
- 0.5.0a3
- 0.5.0a4
- 0.5.0a5
- 0.5.0a6
- 0.5.0b0
- 0.5.0b2
- 0.5.0b3
- 0.5.0b4
- 0.5.0b5
- 0.5.0b6
- 0.5.1
- 0.5.10
- 0.5.11
- 0.5.12
- 0.5.2
- 0.5.3
- 0.5.4
- 0.5.5
- 0.5.6
- 0.5.7
- 0.5.8
- 0.5.9
- 0.6.0
- 0.6.0rc1
- 0.6.1
- 0.6.10
- 0.6.11
- 0.6.12
- 0.6.14
- 0.6.15
- 0.6.16
- 0.6.17
- 0.6.18
- 0.6.19
- 0.6.2
- 0.6.3
- 0.6.3a0
- 0.6.3a1
- 0.6.3a2
- 0.6.3a3
- 0.6.3a4
- 0.6.3a5
- 0.6.3a6
- 0.6.3a7
- 0.6.4
- 0.6.4a0
- 0.6.4a1
- 0.6.5
- 0.6.5a0
- 0.6.5a1
- 0.6.5a10
- 0.6.5a11
- 0.6.5a12
- 0.6.5a13
- 0.6.5a2
- 0.6.5a3
- 0.6.5a4
- 0.6.5a5
- 0.6.5a6
- 0.6.5a7
- 0.6.5a8
- 0.6.5a9
- 0.6.6
- 0.6.7
- 0.6.7a1
- 0.6.7a2
- 0.6.7a3
- 0.6.7a5
- 0.6.8
- 0.6.9
- 1.0.0
- 1.0.0a0
- 1.0.0a1
- 1.0.0a10
- 1.0.0a11
- 1.0.0a12
- 1.0.0a13
- 1.0.0a14
- 1.0.0a15
- 1.0.0a17
- 1.0.0a18
- 1.0.0a19
- 1.0.0a2
- 1.0.0a20
- 1.0.0a21
- 1.0.0a22
- 1.0.0a23
- 1.0.0a24
- 1.0.0a25
- 1.0.0a26
- 1.0.0a27
- 1.0.0a28
- 1.0.0a29
- 1.0.0a3
- 1.0.0a30
- 1.0.0a31
- 1.0.0a32
- 1.0.0a33
- 1.0.0a34
- 1.0.0a35
- 1.0.0a36
- 1.0.0a37
- 1.0.0a38
- 1.0.0a39
- 1.0.0a4
- 1.0.0a40
- 1.0.0a41
- 1.0.0a42
- 1.0.0a43
- 1.0.0a44
- 1.0.0a45
- 1.0.0a46
- 1.0.0a47
- 1.0.0a48
- 1.0.0a49
- 1.0.0a5
- 1.0.0a50
- 1.0.0a51
- 1.0.0a52
- 1.0.0a53
- 1.0.0a55
- 1.0.0a56
- 1.0.0a57
- 1.0.0a58
- 1.0.0a59
- 1.0.0a6
- 1.0.0a60
- 1.0.0a61
- 1.0.0a7
- 1.0.0a8
- 1.0.0a9
- 1.0.0rc0
- 1.0.0rc1
- 1.0.1
- 1.0.10
- 1.0.11
- 1.0.12
- 1.0.13
- 1.0.14
- 1.0.15
- 1.0.16
- 1.0.17
- 1.0.18
- 1.0.19
- 1.0.19.post1
- 1.0.19.post2
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.0.9
- 1.1.0
- 1.1.1
- 1.1.2
- 1.1.3
- 1.1.4
- 1.1.4.post1
- 1.2.0
- 1.3.0
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.5.0
- 1.5.0.post1
- 1.5.0.post2
- 1.5.1
- 1.6.0
- 1.6.1
- 1.6.2
- 1.6.3
- 1.6.4
- 1.6.5
- 1.6.6
- 1.6.7
- 1.6.8
- 1.6.9
- 1.7.0
- Affected ranges
- ECOSYSTEM: < 1.7.1
Update to 1.7.1