GHSA-5jjj-9xc3-rm56: hydra-optuna-sweeper (CVE-2026-106440)

Package	Ecosystem	Affected	Fixed in
hydra-optuna-sweeper	PyPI	>=1.2.0, <1.3.0 \|\| >=1.4.0.dev4, <1.4.0.dev10	1.3.0, 1.4.0.dev10

Machine-written summary

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

Hydra-optuna-sweeper versions >=1.2.0 and <1.3.0, and >=1.4.0.dev4 and <1.4.0.dev10, can resolve and run a callable named in the hydra.sweeper.custom_search_space setting. An attacker who controls the Optuna sweep configuration or command-line overrides, and can reach an importable callable in the application's environment, can run that code with the application's privileges. Upgrade to hydra-optuna-sweeper 1.3.0 or 1.4.0.dev10. Until then, treat sweep configuration and overrides as trusted and do not set custom_search_space from external input.

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:N/UI:R/S:U/C:H/I:H/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0027, the 19th percentile, on 8 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:08 UTC First seen by agentprime
31 Oct 2026, 14:08 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.