CVE-2026-33873

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Source

https://cve.org/CVERecord?id=CVE-2026-33873

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33873.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-33873

Aliases

Downstream

ECHO-e568-958c-ec51

Published

2026-03-27T20:04:23.646Z

Modified

2026-07-15T01:49:17.686951067Z

Severity

9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N CVSS Calculator

Summary

Langflow has Authenticated Code Execution in Agentic Assistant Validation

Details

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component code, the implementation reaches dynamic execution sinks and instantiates the generated class server-side. In deployments where an attacker can access the Agentic Assistant feature and influence the model output, this can result in arbitrary server-side Python execution. Version 1.9.0 fixes the issue.

Database specific

{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33873.json",
    "cwe_ids": [
        "CWE-94"
    ]
}

References

Affected packages

Git / github.com/langflow-ai/langflow

Affected ranges

Type

GIT

Repo

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

Events

Introduced

Fixed

a47f2ad17eb662e940c550cfccb64a87dddd7e0b

Database specific

{
    "cpe": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.9.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "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-2026-33873.json"