`datamodel-code-generator` vulnerable to code injection in via attacker-controlled `default_factory` schema field

Summarydatamodel-code-generator is vulnerable to code injection when generating Python models from an attacker-controlled JSON Schema, OpenAPI, YAML, JSON, Avro, Protobuf, or XSD schema. When a property carries a "defaultfactory" key, its value is interpolated verbatim — as a raw Python expressio...

PYSEC-2026-3564 datamodel-code-generator vulnerable to SSRF via --url: no host/IP validation, follows redirects

Summary datamodel-code-generator's built-in HTTP fetcher http.getbody issues an httpx.GET against any URL passed to --url or reached via a redirect chain with no allow-list, no deny-list, no IP/host validation, and followredirects=True. Loopback addresses, RFC1918 ranges, link-local 169.254.169.2...

PYSEC-2026-3557 datamodel-code-generator vulnerable to code injection via `x-python-import` / `customTypePath` in generated import statements

Summary A malicious input schema OpenAPI / JSON Schema can execute arbitrary Python code on the machine that imports the generated model. The x-python-import and customTypePath schema extensions flow, unsanitized, into the import statements datamodel-code-generator emits. A newline embedded in th...

PYSEC-2026-3563 datamodel-code-generator: Authorization / request headers leaked to cross-origin redirect target when fetching remote schemas

Summary When datamodel-code-generator fetches a remote schema and follows an HTTP redirect, it re-sends the original request headers, including any Authorization header, to the redirect target even when the redirect changes origin host/port/scheme. Credentials that an operator scoped to a trusted...

PYSEC-2026-3561 `datamodel-code-generator` vulnerable to code injection via unescaped carriage return in GraphQL Union description

Summary datamodel-code-generator is vulnerable to code injection when generating Python models from an attacker-controlled GraphQL schema. A description on a Union type, written in the regular-string form "..." with a literal \r escape, is rendered into a Python comment by a Jinja2 filter that...

PYSEC-2026-3558 datamodel-code-generator vulnerable to arbitrary local file read via JSON-Schema `$ref` (`file://` and `../` traversal), bypassing `--no-allow-remote-refs`

Summary datamodel-code-generator resolves JSON-Schema $ref targets that point at the local filesystem without restricting them to the input/base directory and without honoring the remote-reference security control. In the default configuration, an attacker who controls an input schema a "paste yo...

Exploit for CVE-2026-63720

CVE-2026-63720: Code Injection in datamodel-code-generator via...

Code Injection

datamodel-code-generator is vulnerable to Code Injection. The vulnerability is due to insufficient validation of x-python-type values from attacker-controlled JSON Schema content before inserting them into generated Python field annotations, which allows an attacker to execute arbitrary Python co...

Sensitive Information Exposure

datamodel-code-generator is vulnerable to Sensitive Information Exposure. The vulnerability is due to the reuse of Authorization, Cookie, and Proxy-Authorization headers when following cross-origin redirects while fetching remote schemas, which allows an attacker controlling a redirect target to...

Server-Side Request Forgery (SSRF)

datamodel-code-generator is vulnerable to Server-Side Request Forgery SSRF. The vulnerability is due to http.getbody in src/datamodelcodegenerator/http.py accepting --url targets and redirect chain targets without proper host/IP validation, which allows an attacker to perform server-side request...

Path Traversal

datamodel-code-generator is vulnerable to Path Traversal. The vulnerability is due to improper validation of schemaLocation values in XML Schema parsing xs:include, xs:import, xs:redefine, and xs:override, which allows an attacker to reference files outside the intended input base path, resulting...

SUSE CVE-2026-55391

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/datamodelcodegenerator/http.py through...

SUSE CVE-2026-55415

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 0.11.6 until 0.64.0, datamodel-code-generator allows attacker-controlled x-python-import or customTypePath schema...

SUSE CVE-2026-63720

datamodel-code-generator prior to version 0.70.0 contains a code injection vulnerability that allows attackers who control input schemas to achieve remote code execution by supplying a malicious customBasePath value containing embedded newlines and a dot-free Python expression. The crafted value ...

CVE-2026-54654

creationtimestamp| type| source ---|---|--- 2026-07-28 22:35:44+00:00| published-proof-of-concept| https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-wjv6-jcfj-mf9r 2026-07-29 03:28:01+00:00| seen| https://bsky.app/profile/postac001.bsky.social/post/3mrqy7iat4v2y...

CVE-2026-55403

creationtimestamp| type| source ---|---|--- 2026-07-28 22:35:27+00:00| published-proof-of-concept| https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-r5vv-ff45-prp2 2026-07-29 00:00:47+00:00| seen| https://bsky.app/profile/cve.skyfleet.blue/post/3mrqmmvyow724...

CVE-2026-54655

creationtimestamp| type| source ---|---|--- 2026-07-28 22:35:24+00:00| published-proof-of-concept| https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-m34r-v34r-rf9q...

CVE-2026-55391

creationtimestamp| type| source ---|---|--- 2026-07-28 22:35:11+00:00| published-proof-of-concept| https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-vx7x-vcc2-c44g 2026-07-28 23:01:10+00:00| seen| https://bsky.app/profile/thehackerwire.bsky.social/post/3mrqjccj7di2u...

CVE-2026-55389

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 0.62.0, datamodel-code-generator resolves JSON Schema $ref targets in...

CVE-2026-55403

datamodel-code-generator generates Python data models from schema definitions. Prior to 0.63.0, src/datamodelcodegenerator/http.py getbody reuses Authorization, Cookie, and Proxy-Authorization headers when following cross-origin redirects while fetching remote schemas, allowing credentials scoped...