Hydra is a framework for elegantly configuring complex applications. From 1.3.4 until 1.3.6 and 1.4.0.dev9, the instantiate() target blacklist introduced for CVE-2026-68508 incompletely checks the effective callable selected by the target field. Execution wrappers such as timeit.timeit, executable deserialization through pickle.loads, aliases, callable-returning helpers, generic dispatch, and deferred calls can obscure or defer the effective target and bypass name-based authorization. An attacker who causes an application to instantiate untrusted Hydra configuration can use these gaps to execute code with the application's privileges. This issue is fixed in versions 1.3.6 and 1.4.0.dev9.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-rqx7-p7vv-w7hr Hydra instantiate target blacklist bypasses permit code execution
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 07 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 06 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
Description Hydra is a framework for elegantly configuring complex applications. From 1.3.4 until 1.3.6 and 1.4.0.dev9, the instantiate() target blacklist introduced for CVE-2026-68508 incompletely checks the effective callable selected by the target field. Execution wrappers such as timeit.timeit, executable deserialization through pickle.loads, aliases, callable-returning helpers, generic dispatch, and deferred calls can obscure or defer the effective target and bypass name-based authorization. An attacker who causes an application to instantiate untrusted Hydra configuration can use these gaps to execute code with the application's privileges. This issue is fixed in versions 1.3.6 and 1.4.0.dev9.
Title Hydra instantiate target blacklist bypasses permit code execution
Weaknesses CWE-184
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-07T14:14:08.296Z

Reserved: 2026-10-06T16:49:40.590Z

Link: CVE-2026-106442

cve-icon Vulnrichment

Updated: 2026-10-07T14:13:22.931Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-06T19:18:13.170

Modified: 2026-10-07T15:17:11.900

Link: CVE-2026-106442

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T23:45:07Z

Weaknesses