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CVE-2026-63720— datamodel-code-generator Code Injection via Unvalidated customBasePath Schema Field

CVSS 7.5 · High EPSS 0.42% · P34

Affected Version Matrix 1

VendorProductVersion RangeStatus
koxudaxidatamodel-code-generator< 0.70.0affected
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I. Basic Information for CVE-2026-63720

Vulnerability Information
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Vulnerability Title
datamodel-code-generator Code Injection via Unvalidated customBasePath Schema Field
Source: CVE Program / CVE List V5
Vulnerability Description
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 is emitted verbatim into a generated 'from ... import ...' statement without identifier validation, causing arbitrary Python code to execute when the generated module is imported.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
koxudaxidatamodel-code-generator 0 ~ 0.70.0 -

II. Public POCs for CVE-2026-63720

#POC DescriptionSource LinkShenlong Link
AI-Generated POCVerified env Premium
Reproduced successfully in a real sandbox· Below is the actual recording of building the environment and exploiting the vulnerability.
Success marker:VULNERABLE: code injection via customBasePath confirmed; exfiltrated proof token PROOF_b12baa1f9fbd0116 through the generated module import
Reproduction recording is a Pro+ exclusive
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III. Intelligence Information for CVE-2026-63720

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Patches & Fixes for CVE-2026-63720 (1)

Vendor Advisories for CVE-2026-63720 (1)

Other References for CVE-2026-63720 (1)

IV. Related Vulnerabilities

Same weakness: CWE-94

V. Comments for CVE-2026-63720

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