{
  "cveId": "CVE-2026-103060",
  "url": "https://patchblox.com/security/cve/CVE-2026-103060",
  "summary": "CVE-2026-103060 is fixed in rebar3 on 1 platform by DEBIAN-CVE-2026-103060 (version 3.27.3-1), released October 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "rebar3: Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) vulnerability in erlang rebar3 allows...",
  "description": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027) vulnerability in erlang rebar3 allows a malicious package publisher to delete a directory outside the project\u0027s _build directory and extract package files into it when a developer fetches dependencies.  A package release\u0027s dependencies in a Hex registry carry an app field that names the dependency\u0027s OTP application. rebar3 uses this field as the dependency\u0027s name without validating it (rebar_packages:parse_deps/1) and builds the dependency\u0027s directory from that name (rebar_app_utils:dep_to_app/7). rebar_fetch:download_source_online/2 deletes that directory with rm -rf and moves the fetched package into it. hex.pm didn\u0027t restrict the field to a directory name before 2026-10-12, so a publisher could set it to a value such as ../../../../target. When a project depends on such a release directly or transitively, rebar3 get-deps deletes the directory the name resolves to and writes the dependency\u0027s files there. This happens before the dependency\u0027s own rebar.config.script is evaluated, and get-deps compiles nothing.  This issue affects rebar3: from 3.7.0-rc1 before 3.27.2.",
  "published": "2026-10-12T16:17:00Z",
  "severity": "",
  "epss": 0.00451,
  "epssPercentile": 0.39454,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "rebar3",
      "release": "Debian 14",
      "fixedVersion": "3.27.3-1",
      "fix": "DEBIAN-CVE-2026-103060",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-103060",
      "released": "2026-10-20T16:41:29Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T07:50:38Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}