CVE-2026-54690 json
datamodel-code-generator vulnerable to SSRF via JSON-Schema `$ref` to HTTP URL (silent by default)
published 2026-07-28 3 mo ago modified 2026-10-23 16 d ago also GHSA-954p-556p-r752 , PYSEC-2026-3560 , EUVD-2026-50074
- cvss
- 8.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 33%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi datamodel-code-generator 0.61.0
- koxudaxi datamodel-code-generator 0.61.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/koxudaxi/datamodel-code-generator/security/advisories/GHSA-954p-556p-r752 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N |
| GitHub | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N |
| OSV | 3.1 | 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | datamodel-code-generator | >=0.9.1, <0.61.0 |
0.61.0 |
Affected products
- koxudaxi datamodel-code-generator
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/koxudaxi/datamodel-code-generator/commit/5fdba4a09f2d7a9996a504975b7ef7d63e3715bb
web, patch
-
github.com
/koxudaxi/datamodel-code-generator/security/advisories/GHSA-954p-556p-r752
exploit, web, vendor-advisory
-
github.com
/koxudaxi/datamodel-code-generator/releases/tag/0.61.0
web, release-notes
-
github.com
/koxudaxi/datamodel-code-generator
package
-
pypi.org
/project/datamodel-code-generator
package
-
github.com
/advisories/GHSA-954p-556p-r752
advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-54690
advisory
Sources
- CVE List CVE-2026-54690
- GitHub Advisory GHSA-954p-556p-r752
- NVD CVE-2026-54690
- OSV PYSEC-2026-3560
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.