GHSA-386q-5hp3-95m9: datamodel-code-generator (CVE-2026-54653)

Package	Ecosystem	Affected	Fixed in
datamodel-code-generator	PyPI	>=0.17.0, <0.60.2	0.60.2

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Versions 0.17.0 up to but not including 0.60.2 of datamodel-code-generator are affected. When a schema property includes a default_factory key, its value is inserted unchanged into the generated Python code, so an attacker who supplies a malicious schema can run arbitrary Python when the generated module is imported. No special flags are needed, though choosing the typing.TypedDict output model type avoids the issue. Upgrade to datamodel-code-generator 0.60.2 or later.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.8	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0071, the 54th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:11 UTC First seen by agentprime
31 Oct 2026, 14:11 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.