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 v4.0

7.5 HIGHCVSS: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:X/V:X/RE:X/U:X

CVSS v3.1

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

EPSS

0.75% chance of exploitation in the next 30 days, 52th percentile

Published

2026-07-26

Updated

2026-08-14

Proof-of-concept exploits (2)

• https://rahulkarne.com/#/cve/CVE-2026-63720
• rahulreddykarne/CVE-2026-63720-datamodel-code-generator0★ · 2026-08-03

References

• CVE Record
• NVD entry

Related

• CVE-2026-43637
• CVE-2026-65321
• CVE-2026-63643
• CVE-2026-63730
• CVE-2026-63642
• CVE-2026-63731