{
  "cveId": "CVE-2026-42563",
  "url": "https://patchblox.com/security/cve/CVE-2026-42563",
  "summary": "CVE-2026-42563 is fixed in dulwich on 1 platform by DEBIAN-CVE-2026-42563 (version 1.2.5-1), released June 29, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "dulwich: Dulwich is a pure-Python implementation of the Git file formats and protocols",
  "description": "Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.24.0 and prior to version 1.2.5, Dulwich\u0027s \u0060ProcessMergeDriver\u0060 substitutes the file path (from the git tree, controllable by an attacker via a malicious branch) into the merge driver command via the \u0060%P\u0060 placeholder and executes it with \u0060subprocess.run(..., shell=True)\u0060. An attacker who can cause a victim to merge an untrusted branch can achieve arbitrary command execution by crafting malicious file paths. Version 1.2.5 fixes the issue.",
  "published": "2026-06-10T23:16:46Z",
  "severity": "",
  "epss": 0.00555,
  "epssPercentile": 0.46534,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "dulwich",
      "release": "Debian 14",
      "fixedVersion": "1.2.5-1",
      "fix": "DEBIAN-CVE-2026-42563",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42563",
      "released": "2026-06-29T14:19:49Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}