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TI-2026-39973 Aliases CVE-2026-55403GHSA-r5vv-ff45-prp2

Information disclosure in koxudaxi datamodel-code-generator

Priority MEDIUM 51CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure, Spoofing
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-601.

Summary

datamodel-code-generator generates Python data models from schema definitions. Prior to 0.63.0, src/datamodel_code_generator/http.py get_body reuses Authorization, Cookie, and Proxy-Authorization headers when following cross-origin redirects while fetching remote schemas, allowing credentials scoped to one schema host to be leaked to another redirect target. This issue is fixed in version 0.63.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00336 27th percentileScored 2026-11-07
Fix Fixed datamodel-code-generator (koxudaxi): 0.63.0datamodel-code-generator (PyPI): 0.63.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
koxudaxidatamodel-code-generatorbefore 0.63.00.63.0Patch availableCNA
—datamodel-code-generator (PyPI)before 0.63.00.63.0Patch availableGHSA-r5vv-ff45-prp2
  • datamodel-code-generator Vendorkoxudaxi Affected before 0.63.0 Fixed in 0.63.0 Patch available CNA
  • datamodel-code-generator (PyPI) Vendor— Affected before 0.63.0 Fixed in 0.63.0 Patch available GHSA-r5vv-ff45-prp2

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:koxudaxi:datamodel-code-generator:*:*:*:*:*:*:*:*——koxudaxi
  • cpe:2.3:a:koxudaxi:datamodel-code-generator:*:*:*:*:*:*:*:* Versions — — ·koxudaxi

Remediation

  • Fix · CNA datamodel-code-generator (koxudaxi) Fixed in 0.63.0
  • Fix · GHSA-r5vv-ff45-prp2 datamodel-code-generator (PyPI) Fixed in 0.63.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55403
  2. 2026-10-03 Alias added: GHSA-r5vv-ff45-prp2

References

Other 4

  • TI-2026-84481 Code injection in fastapi-code-generator via OpenAPI route paths CVSS 4.0CRITICAL 9.3
  • TI-2026-84480 Code injection in fastapi-code-generator route docstrings CVSS 4.0CRITICAL 9.3
  • TI-2026-39961 Arbitrary local file read via XSD `schemaLocation` (`xs:include`/`xs:import`) path traversal, with no remote-ref gate CVSS 3.1HIGH 7.5
  • TI-2026-39960 Information disclosure in koxudaxi datamodel-code-generator CVSS 3.1HIGH 7.5
  • TI-2026-39512 datamodel-code-generator vulnerable to SSRF via --url: no host/IP validation, follows redirects CVSS 3.1HIGH 8.2
  • TI-2026-39511 datamodel-code-generator vulnerable to SSRF via JSON-Schema `$ref` to HTTP URL (silent by default) CVSS 3.1HIGH 8.2
See all 15 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences