{
  "cveId": "CVE-2026-85731",
  "url": "https://patchblox.com/security/cve/CVE-2026-85731",
  "summary": "CVE-2026-85731 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-85731, released September 19, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "golang-oras-oras-go: oras-go is a Go library for managing OCI artifacts",
  "description": "oras-go is a Go library for managing OCI artifacts. Prior to 2.6.2, content/file.Store extraction of OCI layers marked with io.deis.oras.content.unpack=true can write outside the store working directory. The pushDir path through extractTarDirectory and ensureLinkPath validates symlink targets lexically, resolveRelToBase skips its parent-symlink walk for root-level entries, and writeFile follows a terminal symlink when opening a regular file. A malicious archive can therefore create a symlink chain whose lexical target remains inside the extraction root but whose resolved target is an attacker-selected absolute path, then overwrite that target with a same-named regular-file entry even when AllowPathTraversalOnWrite is false. Pulling an attacker-controlled artifact can create or overwrite any file writable by the process and may lead to code execution. This issue is fixed in version 2.6.2.",
  "published": "2026-09-16T17:18:15Z",
  "severity": "high",
  "cvss": 8.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "epss": 0.00676,
  "epssPercentile": 0.5251,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "golang-oras-oras-go",
      "release": "Debian 14",
      "fixedVersion": "2.6.2-1",
      "fix": "DEBIAN-CVE-2026-85731",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-85731",
      "released": "2026-09-19T18:30:58Z"
    },
    {
      "platform": "linux",
      "product": "helm",
      "release": "sles 15.6",
      "fixedVersion": "3.22.0-150000.1.99.1",
      "fix": "SUSE-SU-2026:4417-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4417-1",
      "released": "2026-10-02T09:20:18Z"
    },
    {
      "platform": "linux",
      "product": "helm",
      "release": "sles 15.7",
      "fixedVersion": "3.22.0-150000.1.99.1",
      "fix": "SUSE-SU-2026:4417-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4417-1",
      "released": "2026-10-02T09:20:18Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T19:38:12Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}