Vulnerability · Published Jul 28, 2026 · Assigned by GitHub_M

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

High 8.2

In plain English

A high-severity server-side request forgery in datamodel-code-generator from koxudaxi. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.4%top 66.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	datamodel-code-generator	0.61.0	GHSA-954p-556p-r752
PyPI	datamodel-code-generator	0.61.0	PYSEC-2026-3560

Affected products (as reported)

Vendor	Product	Versions
koxudaxi	datamodel-code-generator	>= 0.9.1, < 0.61.0

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

References

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