CVE-2026-55255

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Source

https://cve.org/CVERecord?id=CVE-2026-55255

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55255.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-55255

Aliases

Downstream

ROOT-APP-PYPI-CVE-2026-55255

Published

2026-06-23T16:28:20.985Z

Modified

2026-07-10T04:03:03.006045405Z

Severity

8.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L CVSS Calculator

Summary

Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow

Details

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, 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 1.9.1.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55255.json"
}

References

Affected packages

Git / github.com/langflow-ai/langflow

Affected ranges

Type

GIT

Repo

https://github.com/langflow-ai/langflow

Events

Introduced

Fixed

dc26d19c1ed5b2779a3a759f78a747f47089c534

Fixed

2c9f498d664a3c32698b57d7c5e752625291060e

Database specific

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.9.1"
        }
    ],
    "cpe": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

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

1.8.2

1.8.3

1.9.0

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

v1.9.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55255.json"