PYSEC-2026-221
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/langflow/PYSEC-2026-221.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-221
- Aliases
-
- CVE-2026-55255
- GHSA-qrpv-q767-xqq2
- Published
- 2026-06-23T17:17:08.050Z
- Modified
- 2026-06-26T00:00:06.061343789Z
- Severity
-
- 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L CVSS Calculator
- Summary
- [none]
- Details
-
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.2, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. This vulnerability is fixed in 1.9.2.
- References
Affected packages
PyPI / langflow
Package
- Name
- langflow
- View open source insights on deps.dev
- Purl
- pkg:pypi/langflow
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.9.2
Affected versions
0.*
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
0.2.2
0.2.3
0.2.4
0.2.5
0.2.6
0.2.7
0.2.8
0.2.9
0.2.10
0.2.11
0.2.12
0.2.13
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
0.4.4
0.4.5
0.4.6
0.4.7
0.4.8
0.4.9
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
0.4.20
0.4.21
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
0.5.0
0.5.1
0.5.2
0.5.3
0.5.4
0.5.5
0.5.6
0.5.7
0.5.8
0.5.9
0.5.10
0.5.11
0.5.12
0.6.0rc1
0.6.0
0.6.1
0.6.2
0.6.3a0
0.6.3a1
0.6.3a2
0.6.3a3
0.6.3a4
0.6.3a5
0.6.3a6
0.6.3a7
0.6.3
0.6.4a0
0.6.4a1
0.6.4
0.6.5a0
0.6.5a1
0.6.5a2
0.6.5a3
0.6.5a4
0.6.5a5
0.6.5a6
0.6.5a7
0.6.5a8
0.6.5a9
0.6.5a10
0.6.5a11
0.6.5a12
0.6.5a13
0.6.5
0.6.6
0.6.7a1
0.6.7a2
0.6.7a3
0.6.7a5
0.6.7
0.6.8
0.6.9
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
1.*
1.0.0a0
1.0.0a1
1.0.0a2
1.0.0a3
1.0.0a4
1.0.0a5
1.0.0a6
1.0.0a7
1.0.0a8
1.0.0a9
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
1.0.0a20
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
1.0.0a30
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
1.0.0a40
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
1.0.0a50
1.0.0a51
1.0.0a52
1.0.0a53
1.0.0a55
1.0.0a56
1.0.0a57
1.0.0a58
1.0.0a59
1.0.0a60
1.0.0a61
1.0.0rc0
1.0.0rc1
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.0.9
1.0.10
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
1.1.0
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
1.7.1
1.7.2
1.7.3
1.8.0rc0
1.8.0rc1
1.8.0rc2
1.8.0rc3
1.8.0rc4
1.8.0rc5
1.8.0rc6
1.8.0
1.8.1
1.8.2
1.8.3rc0
1.8.3
1.8.4
1.9.0
1.9.1