GHSA-x9r9-c232-4q39: transformers (CVE-2026-80047)

Package	Ecosystem	Affected	Fixed in
transformers	PyPI	>=4.49.0, <=5.8.1	No fixed version yet

Machine-written summary

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

Hugging Face Transformers versions 4.49.0 through 5.8.1 are affected. When a user calls GenerativePreTrainedModel.load_custom_generate() on a remote model, the library copies that model's custom generation Python file to the local cache before the user is asked whether to trust the code, so a user who declines still has the file written to disk. The source gives few details on exploitation conditions. No fixed version is listed, and the source does not give a workaround.

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
7.8	High	3.1	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	GitHub Advisory Database

CISA KEV Not listed.
EPSS 0.0010, the 1st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:09 UTC First seen by agentprime
31 Oct 2026, 14:09 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.