GHSA-rfr2-mq9m-x2qx: datamodel-code-generator (CVE-2026-54691)

Package	Ecosystem	Affected	Fixed in
datamodel-code-generator	PyPI	>=0.9.1, <0.61.0	0.61.0

Machine-written summary

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

Affected: datamodel-code-generator versions from 0.9.1 before 0.61.0. The built-in HTTP fetcher used by --url did not restrict target addresses and followed redirects, so a URL could reach loopback, private, or link-local (including cloud metadata) hosts. An attacker who controls a URL or redirect chain could get the response body written into generated Python source, where it can be read by anyone with access to that file. Upgrade to version 0.61.0, which blocks non-public targets by default and does not follow redirects unless opted in.

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
8.2	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0026, the 17th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:10 UTC First seen by agentprime
31 Oct 2026, 14:10 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.