CVE Watch30 oct 2026

CVE-2026-97209

Insecure Temporary File vulnerability in Mix deps.partition in Elixir allows a local user to execute code as another user via a swapped part

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

0-100

Publicado: 30 oct 2026 · Última mod.: 30 oct 2026 · CWE-377

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Insecure Temporary File vulnerability in Mix deps.partition in Elixir allows a local user to execute code as another user via a swapped partition config file. Partitioned dependency compilation passes the project configuration to each partition VM through a file in a fixed-name directory under the shared system temporary directory, and the partition trusts what it reads back. Another local user on the same host can exploit this during a mix deps.compile run that uses partitioned compilation. Mix.Tasks.Deps.Partition.server/4 in lib/mix/lib/mix/tasks/deps.partition.ex creates the directory with File.mkdir_p/1, which accepts an existing directory without checking its owner, so a user who created it first can replace the file before client/0 reads it. This issue affects mix: from 1.20.0-rc.4 before 1.20.5.

Referencias oficiales

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