---
id: CVE-2026-106442
title: Hydra is a framework for elegantly configuring complex applications
summary: >-
  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 targe…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-184
vendor: hydra-ecosystem
product: hydra
affected:
  - 'hydra >= 1.3.4, < 1.3.6'
  - 'hydra >= 1.4.0.dev0, < 1.4.0.dev9'
published: '2026-10-06'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T15:17:11.900'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106442'
references:
  - url: >-
      https://github.com/hydra-ecosystem/hydra/commit/2c82bbb3f39603b336cb852461739fdf7a38798a
    label: security-advisories@github.com
  - url: >-
      https://github.com/hydra-ecosystem/hydra/commit/f462811117b5ecfd2ed652ed52d6b4e3771bd943
    label: security-advisories@github.com
  - url: 'https://github.com/hydra-ecosystem/hydra/pull/3412'
    label: security-advisories@github.com
  - url: 'https://github.com/hydra-ecosystem/hydra/pull/3413'
    label: security-advisories@github.com
  - url: 'https://github.com/hydra-ecosystem/hydra/releases/tag/v1.3.6'
    label: security-advisories@github.com
  - url: >-
      https://github.com/hydra-ecosystem/hydra/security/advisories/GHSA-rqx7-p7vv-w7hr
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106442'
  - url: 'https://github.com/advisories/GHSA-rqx7-p7vv-w7hr'
tags:
  - nvd
  - cve.org
  - ghsa
  - pip
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-07T14:12:56.490404Z'
ingestedAt: '2026-10-06T19:13:33.851Z'
aliases:
  - GHSA-rqx7-p7vv-w7hr
ecosystem: pip
patched:
  - hydra-core 1.3.6
  - hydra-core 1.4.0.dev9
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-106442)

Affected packages:

- `hydra-core >= 1.3.4, < 1.3.6`
- `hydra-core >= 1.4.0.dev0, < 1.4.0.dev9`

Patched in:

- `hydra-core 1.3.6`
- `hydra-core 1.4.0.dev9`

Source: https://github.com/advisories/GHSA-rqx7-p7vv-w7hr