Path Traversal in Hex Hexpm
CVE-2026-23939
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in hexpm hexpm/hexpm ('Elixir.Hexpm.Store.Local' module) allows Relative Path Traversal. This vulnerability is associated with program files lib/hexpm/store/local.ex and program routines 'Elixir.Hexpm.Store.Local':get/3, 'Elixir.Hexpm.Store.Local':put/4, 'Elixir.Hexpm.Store.Local':delete/2, 'Elixir.Hexpm.Store.Local':delete_many/2. This issue does NOT affect hex.pm the service. Only self-hosted deployments using the Local Storage backend are affected. This issue affects hexpm: from 931ee0ed46fa89218e0400a4f6e6d15f96406050 before 5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.004 (33.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
Weakness classification (CWE)
References
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related, vendor-advisory, Mitigation, Vendor Advisory)
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related)
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (related)
- 6b3ad84c-e1a6-4bf7-a703-f496b71e49db (Patch, patch)
Frequently asked questions
- What is CVE-2026-23939?
- CVE-2026-23939 is a high-severity vulnerability in Hex Hexpm, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-02-26.
- How severe is CVE-2026-23939?
- High severity. CVSS v3 base score is 7.5 out of 10.