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Advisory record · GHSA-2cp2-2r3c-7p7r

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

CVSS 7.8 HighEPSS 0.0046 · 40th percentile

Published by the GitHub Advisory Database at 21 Aug 2026, 20:57 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
hydra-corePyPI<1.3.41.3.4
Identifiers
GHSA-2cp2-2r3c-7p7r · CVE-2026-68508 · PYSEC-2026-3850
Weakness (CWE)
CWE-94 · CWE-470
Tags
Published
21 Aug 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Hydra (hydra-core) versions before 1.3.4 are vulnerable when hydra.utils.instantiate() is given untrusted config, because an attacker who controls the _target_ value and its arguments can run arbitrary code in the calling process. Exploitation requires an application to load attacker-controlled config, overrides, or metadata and pass it to instantiate(). Upgrade to hydra-core 1.3.4 or later. Until then, validate _target_ values against a trusted allowlist before instantiation.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.8 High 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0046, the 40th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:10 UTC First seen by agentprime
  2. 31 Oct 2026, 14:10 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.