CVE-2026-63720

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.

CVSS 4.0

7.5CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.7% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-25)

CWE

CWE-94

Published

2026-07-26

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

References

• https://github.com/koxudaxi/datamodel-code-generator
• https://github.com/koxudaxi/datamodel-code-generator/commit/545a96c5
• https://github.com/rahulreddykarne/CVE-2026-63720-datamodel-code-generator
• https://rahulkarne.com/#/cve/CVE-2026-63720
• https://www.vulncheck.com/advisories/datamodel-code-generator-code-injection-via-unvalidated-custombasepath-schema-field

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