CVE-2026-5027

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Source
https://cve.org/CVERecord?id=CVE-2026-5027
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5027.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-5027
Published
2026-03-27T14:54:53Z
Modified
2026-08-20T03:54:27Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Langflow - Path Traversal Arbitrary File Write via upload_user_file
Details

The 'POST /api/v2/files' endpoint does not sanitize the 'filename' parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences ('../').

Database specific 
{
    "cna_assigner": "tenable",
    "cwe_ids": [
        "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5027.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "last_affected": "0"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/langflow-ai/langflow

Affected ranges

Type
GIT
Repo
https://github.com/langflow-ai/langflow
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a47f2ad17eb662e940c550cfccb64a87dddd7e0b
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:langflow:langflow:*:-:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.9.0"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

1.*
1.1.2
1.1.3
1.1.4
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
1.5.0.post1
1.8.0.rc0
1.8.0.rc1
1.8.0.rc2
1.8.0.rc3
1.8.0.rc4
1.8.0.rc5
1.8.0.rc6
1.8.1
v0.*
v0.0.31
v0.0.69
v0.0.70
v0.0.71
v0.0.72
v0.0.73
v0.0.74
v0.0.75
v0.0.76
v0.0.77
v0.0.78
v0.0.79
v0.0.80
v0.0.81
v0.0.82
v0.0.83
v0.0.84
v0.0.85
v0.0.86
v0.0.87
v0.0.88
v0.0.89
v0.1.0
v0.1.2
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.1.7
v0.2.0
v0.2.1
v0.2.10
v0.2.11
v0.2.12
v0.2.13
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.2.8
v0.2.9
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.3.4
v0.4.0
v0.4.1
v0.4.10
v0.4.11
v0.4.12
v0.4.14
v0.4.15
v0.4.16
v0.4.17
v0.4.18
v0.4.19
v0.4.2
v0.4.20
v0.4.21
v0.4.3
v0.4.4
v0.4.5
v0.4.6
v0.4.7
v0.4.8
v0.4.9
v0.5.0
v0.5.0a0
v0.5.0a1
v0.5.0a2
v0.5.0a3
v0.5.0a4
v0.5.0a5
v0.5.0a6
v0.5.0b0
v0.5.0b2
v0.5.0b3
v0.5.0b4
v0.5.0b5
v0.5.0b6
v0.5.1
v0.5.10
v0.5.11
v0.5.12
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.5.8
v0.5.9
v0.6.0
v0.6.0a0
v0.6.0rc1
v0.6.1
v0.6.10
v0.6.11
v0.6.12
v0.6.13
v0.6.14
v0.6.15
v0.6.16
v0.6.17
v0.6.18
v0.6.19
v0.6.2
v0.6.3
v0.6.3a0
v0.6.3a1
v0.6.3a2
v0.6.3a3
v0.6.3a4
v0.6.3a5
v0.6.3a6
v0.6.4
v0.6.5
v0.6.6
v0.6.7
v0.6.8
v0.6.9
v1.*
v1.0.10
v1.0.11
v1.0.12
v1.0.13
v1.0.14
v1.0.15
v1.0.16
v1.0.17
v1.0.18
v1.0.19
v1.0.2
v1.0.3
v1.0.4
v1.0.5
v1.0.6
v1.0.7
v1.0.8
v1.0.9
v1.1.0
v1.1.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5027.json"