CVE-2026-97209 Affecting elixir-lang package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIANUNSTABLE-ELIXIRLANG-22103837
- published31 Oct 2026
- disclosed30 Oct 2026
Introduced: 30 Oct 2026
NewCVE-2026-97209 (opens in a new tab)How to fix?
There is no fixed version for Debian:unstable elixir-lang.
NVD Description
Note: Versions mentioned in the description apply only to the upstream elixir-lang package and not the elixir-lang package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2026-97209
- https://cna.erlef.org/cves/CVE-2026-97209.html
- https://github.com/elixir-lang/elixir/commit/55eb91220a1de14dc5aa27029d1f45b0f5832b2d
- https://github.com/elixir-lang/elixir/commit/7f3d95b60c28ae3026a5c1bf943166391245bfd1
- https://github.com/elixir-lang/elixir/commit/9adbe955c8664f4be77d879dd38c003dd39fa777
- https://osv.dev/vulnerability/EEF-CVE-2026-97209
- https://github.com/elixir-lang/elixir/security/advisories/GHSA-96q6-xhwp-fc8q