CVE-2026-55403— datamodel-code-generator: Authorization / request headers leaked to cross-origin redirect target when fetching remote schemas
Quick assessment
Affected
koxudaxi datamodel-code-generator
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Koudai Aono datamodel-code-generator是日本Koudai Aono个人开发者的一款数据模型代码生成器。 Koudai Aono datamodel-code-generator 0.63.0之前版本存在安全漏洞，该漏洞源于在获取远程schema时跟随跨源重定向，重用Authorization、Cookie和Proxy-Authorization头，导致凭证泄露到另一个重定向目标。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud StorageAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| koxudaxi | datamodel-code-generator | < 0.63.0 |
affected |
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I. Basic Information for CVE-2026-55403
Vulnerability Information
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Vulnerability Title
datamodel-code-generator: Authorization / request headers leaked to cross-origin redirect target when fetching remote schemas
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Koudai Aono datamodel-code-generator 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Koudai Aono datamodel-code-generator是日本Koudai Aono个人开发者的一款数据模型代码生成器。 Koudai Aono datamodel-code-generator 0.63.0之前版本存在安全漏洞，该漏洞源于在获取远程schema时跟随跨源重定向，重用Authorization、Cookie和Proxy-Authorization头，导致凭证泄露到另一个重定向目标。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| koxudaxi | datamodel-code-generator | < 0.63.0 | - |
|
II. Public POCs for CVE-2026-55403
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-55403 (1)
Vendor Advisories for CVE-2026-55403 (1)
Vendor Pages for CVE-2026-55403 (1)
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🔗 Release 0.63.0 · koxudaxi/datamodel-code-generator · GitHub x_refsource_MISC
Same Patch Batch · koxudaxi · 2026-07-28 · 12 CVEs total
| CVE-2026-54653 | 8.8 HIGH | `datamodel-code-generator` vulnerable to code injection in via attacker-controlled `defaul |
| CVE-2026-54691 | 8.2 HIGH | datamodel-code-generator vulnerable to SSRF via --url: no host/IP validation, follows redi |
| CVE-2026-54690 | 8.2 HIGH | datamodel-code-generator vulnerable to SSRF via JSON-Schema `$ref` to HTTP URL (silent by |
| CVE-2026-54654 | 7.8 HIGH | `datamodel-code-generator` vulnerable to code injection via unescaped carriage return in ` |
| CVE-2026-54621 | 7.8 HIGH | `datamodel-code-generator` vulnerable to code injection via unescaped carriage return in G |
| CVE-2026-54655 | 7.8 HIGH | `datamodel-code-generator` vulnerable to code execution on import via `x-python-type` JSON |
| CVE-2026-54656 | 7.8 HIGH | `datamodel-code-generator` vulnerable to code execution on import via unescaped `validator |
| CVE-2026-55390 | 7.5 HIGH | Arbitrary local file read via XSD `schemaLocation` (`xs:include`/`xs:import`) path travers |
| CVE-2026-55391 | 7.5 HIGH | datamodel-code-generator vulnerable to SSRF protection bypass via DNS rebinding |
| CVE-2026-55389 | 7.5 HIGH | datamodel-code-generator vulnerable to arbitrary local file read via JSON-Schema `$ref` (` |
| CVE-2026-55415 | 7.5 HIGH | datamodel-code-generator vulnerable to code injection via `x-python-import` / `customTypeP |
IV. Related Vulnerabilities
Same product: datamodel-code-generator
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CVE-2026-55389
datamodel-code-generator vulnerable to arbitrary local file -
CVE-2026-54653
`datamodel-code-generator` vulnerable to code injection in v -
CVE-2026-55391
datamodel-code-generator vulnerable to SSRF protection bypas -
CVE-2026-54656
`datamodel-code-generator` vulnerable to code execution on i -
CVE-2026-54690
datamodel-code-generator vulnerable to SSRF via JSON-Schema
Same vendor: koxudaxi
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CVE-2026-55389
datamodel-code-generator vulnerable to arbitrary local file -
CVE-2026-54653
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CVE-2026-55391
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CVE-2026-54656
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CVE-2026-54690
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Same weakness: CWE-200
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