CVE-2026-55391
7.5 · HIGHOverview
CVE-2026-55391 is a high-severity vulnerability affecting koxudaxi datamodel-code-generator. It was published on July 28, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from koxudaxi. Update datamodel-code-generator to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| koxudaxi | datamodel-code-generator | >= 0, < 0.63.0 | Affected |
References
Frequently Asked Questions
What is CVE-2026-55391?
CVE-2026-55391 is a high-severity vulnerability affecting koxudaxi datamodel-code-generator. It was published on July 28, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-55391?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-55391?
Check the references section for vendor advisories and patches from koxudaxi. Update datamodel-code-generator to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-55391?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-55391 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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