hydra-ecosystem Hydra up to 1.3.5 Target Blacklist instantiate target deserialization

Summaryinfo

A vulnerability classified as critical was found in hydra-ecosystem Hydra up to 1.3.5. The affected element is the function instantiate of the component Target Blacklist. Executing a manipulation of the argument Target can lead to deserialization. This vulnerability is tracked as CVE-2026-106442. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in hydra-ecosystem Hydra up to 1.3.5. This vulnerability affects the function instantiate of the component Target Blacklist. The manipulation of the argument target with an unknown input leads to a deserialization vulnerability. The CWE definition for the vulnerability is CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability was named CVE-2026-106442 since 10/06/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit.

Upgrading to version 1.3.6 or 1.4.0.dev9 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• hydra-ecosystem

Name

• Hydra

Version

• 1.3.0
• 1.3.1
• 1.3.2
• 1.3.3
• 1.3.4
• 1.3.5

Website

• Product: https://github.com/hydra-ecosystem/hydra/

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