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Vulnerability record · CVE-2026-63720 · published 26 July 2026

CVE-2026-63720: Code injection vulnerability

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.

7.5 CVSS 4.0 High EPSS 0.74% · top 47.3% CWE-94 · Code injection Deferred
7.5CVSS 4.0 base score
0.74%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
12 Aug 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2026-63720), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.