CVE-2026-23939

Path Traversal in Local File Store Backend

HIGH
7.5
CVSS Score
Published: February 26, 2026 at 07:41 PM UTC
Updated: September 16, 2026 at 03:57 PM UTC
2 products affected across 2 vendorsHexpmHexpm

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Severity
HIGH7.5
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2014-09-29 ≤ v < 2026-02-26
931ee0ed46fa89218e0400a4f6e6d15f96406050 ≤ v < 5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0931ee0ed46fa89218e0400a4f6e6d15f96406050
Vendor states this is fixed in 5d2ccd2f14f45a63225a73fb5b1c937baf36fdc0 (fixed)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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