{
  "cveId": "CVE-2026-78682",
  "url": "https://patchblox.com/security/cve/CVE-2026-78682",
  "summary": "CVE-2026-78682 is fixed in nltk on 1 platform by DEBIAN-CVE-2026-78682 (version 3.10.3-1), released August 26, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "nltk: NLTK before 3.10.3 contains a server-side request forgery vulnerability in nltk.pathsec.urlopen (and callers nltk.dat...",
  "description": "NLTK before 3.10.3 contains a server-side request forgery vulnerability in nltk.pathsec.urlopen (and callers nltk.data.load, nltk.downloader.Downloader.index/download) when an HTTP proxy is configured. pathsec.urlopen validates the requested hostname locally, but proxy-handler inheritance disables the safe HTTP/HTTPS handlers so the actual fetch is performed by the proxy against a destination that is never re-validated. An attacker can supply a validated public URL that the proxy forwards to an internal loopback-only service, allowing disclosure of internal HTTP resources, loading of forged downloader indexes, and installation of attacker-chosen package content.",
  "published": "2026-08-25T02:16:52Z",
  "severity": "",
  "epss": 0.00435,
  "epssPercentile": 0.3799,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "nltk",
      "release": "Debian 14",
      "fixedVersion": "3.10.3-1",
      "fix": "DEBIAN-CVE-2026-78682",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-78682",
      "released": "2026-08-26T00:17:14Z"
    }
  ],
  "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"
  }
}