What’s Vulnerable › Vulnerabilities

CVE-2026-54690: datamodel-code-generator vulnerable to SSRF via JSON-Schema `$ref` to HTTP URL (silent by default)

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-28 · updated 2026-10-23
• Weakness: CWE-918

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. From 0.9.1 until 0.61.0, datamodel-code-generator silently dereferences attacker-controlled JSON Schema $ref HTTP or HTTPS URLs in src/datamodel_code_generator/parser/jsonschema.py through _get_ref_body, and the --allow-remote-refs gate can warn instead of blocking, allowing server-side request forgery through src/datamodel_code_generator/http.py. This issue is fixed in version 0.61.0.

Affected products

• koxudaxi datamodel-code-generator: from 0.9.1 before 0.61.0 — fixed in 0.61.0

How to fix

Upgrade to a fixed version: koxudaxi datamodel-code-generator 0.61.0. Check the vendor advisory for mitigations.

References

• https://github.com/koxudaxi/datamodel-code-generator/commit/5fdba4a09f2d7a9996a504975b7ef7d63e3715bb
• https://github.com/koxudaxi/datamodel-code-generator/releases/tag/0.61.0
• https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-954p-556p-r752
• https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-954p-556p-r752

Get alerted when CVE-2026-54690 or the next vulnerability affects your stack