CVE-2026-55391

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Source
https://cve.org/CVERecord?id=CVE-2026-55391
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55391.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-55391
Aliases
Downstream
CGA (2)
MINI (1)
openSUSE (1)
Related
Published
2026-07-28T21:45:39Z
Modified
2026-10-28T02:30:27Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N CVSS Calculator
Summary
datamodel-code-generator vulnerable to SSRF protection bypass via DNS rebinding
Details

datamodel-code-generator generates Pydantic v2 models, dataclasses, TypedDict, and msgspec.Struct from OpenAPI, JSON Schema, GraphQL, Avro, Protobuf, and raw JSON, YAML, or CSV. Prior to 0.63.0, datamodel-code-generator validates a URL host once in src/datamodel_code_generator/http.py through get_body, _validate_url_for_fetch, and _get_ips_from_host, but then lets httpx resolve the host again for the connection, allowing DNS rebinding to bypass allow_private_network=False and reach internal services. This issue is fixed in version 0.63.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-350",
        "CWE-367",
        "CWE-918"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55391.json"
}
References

Affected packages

Git / github.com/datamodel-code-generator/datamodel-code-generator

Affected ranges

Type
GIT
Repo
https://github.com/datamodel-code-generator/datamodel-code-generator
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a1252a218df10537cd0526ae69757cde446a1ce6
Fixed
25c8b7e497419eb20b230fa3318c04f9bebc5a6f
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:koxudaxi:datamodel-code-generator:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "0.63.0"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "25c8b7e497419eb20b230fa3318c04f9bebc5a6f"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "0.63.0",
            "range":  [
                {
                    "fixed":  "a1252a218df10537cd0526ae69757cde446a1ce6"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.0.1
0.0.3
0.0.4
0.0.5
0.0.6
0.1.0
0.10.0
0.10.1
0.10.2
0.10.3
0.11.0
0.11.1
0.11.10
0.11.11
0.11.12
0.11.13
0.11.14
0.11.15
0.11.16
0.11.17
0.11.18
0.11.19
0.11.2
0.11.20
0.11.3
0.11.4
0.11.5
0.11.6
0.11.7
0.11.8
0.11.9
0.12.0
0.12.1
0.12.2
0.12.3
0.13.0
0.13.1
0.13.2
0.13.3
0.13.4
0.13.5
0.14.0
0.14.1
0.15.0
0.16.0
0.16.1
0.17.0
0.17.1
0.17.2
0.18.0
0.18.1
0.19.0
0.2.0
0.2.1
0.2.10
0.2.11
0.2.12
0.2.13
0.2.14
0.2.15
0.2.16
0.2.2
0.2.3
0.2.4
0.2.5
0.2.6
0.2.7
0.2.8
0.2.9
0.20.0
0.21.0
0.21.1
0.21.2
0.21.3
0.21.4
0.21.5
0.22.0
0.22.1
0.23.0
0.24.0
0.24.1
0.24.2
0.25.0
0.25.1
0.25.2
0.25.3
0.25.4
0.25.5
0.25.6
0.25.7
0.25.8
0.25.9
0.26.0
0.26.1
0.26.2
0.26.3
0.26.4
0.26.5
0.27.0
0.27.1
0.27.2
0.27.3
0.28.0
0.28.1
0.28.2
0.28.3
0.28.4
0.28.5
0.29.0
0.3.0
0.3.1
0.3.2
0.3.3
0.30.0
0.30.1
0.30.2
0.31.0
0.31.1
0.31.2
0.32.0
0.33.0
0.34.0
0.35.0
0.36.0
0.37.0
0.38.0
0.39.0
0.4.0
0.4.1
0.4.10
0.4.11
0.4.2
0.4.3
0.4.4
0.4.5
0.4.6
0.4.7
0.4.8
0.4.9
0.40.0
0.41.0
0.42.0
0.42.1
0.42.2
0.43.0
0.43.1
0.44.0
0.45.0
0.46.0
0.47.0
0.48.0
0.49.0
0.5.0
0.5.1
0.5.10
0.5.11
0.5.12
0.5.13
0.5.14
0.5.15
0.5.16
0.5.17
0.5.18
0.5.19
0.5.2
0.5.20
0.5.21
0.5.22
0.5.23
0.5.24
0.5.25
0.5.26
0.5.27
0.5.28
0.5.29
0.5.3
0.5.30
0.5.31
0.5.32
0.5.33
0.5.34
0.5.35
0.5.36
0.5.37
0.5.38
0.5.39
0.5.4
0.5.5
0.5.6
0.5.7
0.5.8
0.5.9
0.50.0
0.51.0
0.52.0
0.52.1
0.52.2
0.53.0
0.54.0
0.54.1
0.55.0
0.56.0
0.56.1
0.57.0
0.58.0
0.59.0
0.59.1
0.6.0
0.6.1
0.6.10
0.6.11
0.6.12
0.6.13
0.6.14
0.6.15
0.6.16
0.6.17
0.6.18
0.6.19
0.6.2
0.6.20
0.6.21
0.6.22
0.6.23
0.6.24
0.6.25
0.6.26
0.6.3
0.6.4
0.6.5
0.6.6
0.6.7
0.6.8
0.6.9
0.60.0
0.60.1
0.60.2
0.61.0
0.62.0
0.7.0
0.7.1
0.7.2
0.7.3
0.8.0
0.8.1
0.8.2
0.8.3
0.9.0
0.9.1
0.9.2
0.9.3
0.9.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55391.json"