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TI-2026-48278 Aliases CVE-2026-68508GHSA-2cp2-2r3c-7p7r

Hydra: hydra.utils.instantiate with untrusted config can lead to code execution

Priority LOW 36CWE-470Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-94.

Summary

Hydra is a framework for elegantly configuring complex applications. Prior to 1.3.4, hydra.utils.instantiate() resolves and calls Python objects selected by configuration through _resolve_target() in hydra/_internal/instantiate/_instantiate2.py, allowing attacker-controlled target values and arguments to choose dangerous callables. A consuming application, library, CLI workflow, or model loader that passes untrusted configuration, CLI overrides, or model metadata into hydra.utils.instantiate() can therefore execute arbitrary code in its own process, including reading or modifying files and credentials or terminating the process. Version 1.3.4 adds target blocking with an explicit HYDRA_INSTANTIATE_ALLOWLIST_OVERRIDE escape hatch. This issue is fixed in version 1.3.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00456 39th percentileScored 2026-11-07
Fix Fixed hydra (facebookresearch): 1.3.4hydra-core (PyPI): 1.3.4Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
facebookresearchhydrabefore 1.3.41.3.4Patch availableCNA
—hydra-core (PyPI)before 1.3.41.3.4Patch availableGHSA-2cp2-2r3c-7p7r
  • hydra Vendorfacebookresearch Affected before 1.3.4 Fixed in 1.3.4 Patch available CNA
  • hydra-core (PyPI) Vendor— Affected before 1.3.4 Fixed in 1.3.4 Patch available GHSA-2cp2-2r3c-7p7r

Remediation

  • Fix · CNA hydra (facebookresearch) Fixed in 1.3.4
  • Fix · GHSA-2cp2-2r3c-7p7r hydra-core (PyPI) Fixed in 1.3.4 Advisory →

Red Hat 2 advisories

  • RHSA-2026:70979 Released 2026-09-23 · Red Hat rating Important
    Red Hat AI Inference 3.4.5 (cuda)
    • Red Hat AI Inference Server 3.4 registry.redhat.io/rhaii/vllm-cuda-rhel9
  • RHSA-2026:70965 Released 2026-09-23 · Red Hat rating Important
    Red Hat AI Inference 3.4.5 (cpu)
    • Red Hat AI Inference Server 3.4 registry.redhat.io/rhaii/vllm-cpu-rhel9

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat AI Inference Server 3.4Fixed RHSA-2026:70965, RHSA-2026:70979

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-68508
  2. 2026-10-03 Alias added: GHSA-2cp2-2r3c-7p7r

References

Other 6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences