CVE-2026-63720

Summary

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.

Affected Software

Weaknesses

• CWE-94: Improper Control of Generation of Code ('Code Injection')

References

• https://github.com/koxudaxi/datamodel-code-generator/commit/545a96c5
• https://github.com/koxudaxi/datamodel-code-generator
• https://www.vulncheck.com/advisories/datamodel-code-generator-code-injection-via-unvalidated-custombasepath-schema-field

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