CVE-2026-106440
Description
Hydra is a framework for elegantly configuring complex applications. From 1.2.0 until 1.3.0 and 1.4.0.dev10, the hydra-optuna-sweeper package accepts a configuration-controlled dotted path in hydra.sweeper.custom_search_space, resolves it with hydra.utils.get_method(), and later invokes the returned callable in the Hydra controller process. Because get_method() is a trusted-input lookup helper and does not apply the execution policy used by instantiate(), an attacker who controls Optuna sweep configuration or command-line overrides can select importable Python code for execution with the application's privileges, including bypassing a trusted execution whitelist on affected Hydra 1.4 development releases. This issue is fixed in versions 1.3.0 and 1.4.0.dev10.
How to fix
- hydra-optuna-sweeper1.3.0, 1.4.0.dev10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| hydra-optuna-sweeperPyPI | 1.2.0 ≤ v < 1.3.0, 1.4.0.dev4 ≤ v < 1.4.0.dev10 | 1.3.0, 1.4.0.dev10 |
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