{
  "cveId": "CVE-2026-69246",
  "url": "https://patchblox.com/security/cve/CVE-2026-69246",
  "summary": "CVE-2026-69246 is fixed in guzzle on 1 platform by DEBIAN-CVE-2026-69246 (version 7.15.2-1), released August 13, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "guzzle: Guzzle is an extensible PHP HTTP client",
  "description": "Guzzle is an extensible PHP HTTP client. Prior to 7.15.2 and 8.0.1, Guzzle gives a transport the request URI as text and supplies the Host header separately. The cURL handlers set CURLOPT_URL to the URI exactly as written and push that Host into CURLOPT_HTTPHEADER; StreamHandler does the same through fopen(). libcurl then parses the authority itself, percent-decoding it and, on an IDN-capable build, applying IDNA mapping, and uses the result to resolve, connect, name the TLS peer and address a proxy CONNECT, while the supplied Host suppresses the aligned one libcurl would have generated. For a URI host written as 127.0.0.%31, filter_var() rejects the host as an IP literal, yet libcurl decodes it to 127.0.0.1 and reaches loopback with no DNS lookup while the server receives Host: 127.0.0.%31. An attacker who influences a fetched URI can therefore reach a host the application\u0027s checks excluded and read whatever the host exposes of the response. The same divergence moves Guzzle\u0027s own decisions onto a spelling the transport does not use: no_proxy selects proxy routing from the literal host, and RedirectMiddleware decides from it whether to strip Authorization and Cookie. Exploitation requires the application to build a request URI from untrusted input and to make a host decision before handing it to Guzzle. This issue is fixed in versions 7.15.2 and 8.0.1.",
  "published": "2026-08-03T21:16:42Z",
  "severity": "high",
  "cvss": 7.2,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
  "epss": 0.0037,
  "epssPercentile": 0.3112,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "guzzle",
      "release": "Debian 14",
      "fixedVersion": "7.15.2-1",
      "fix": "DEBIAN-CVE-2026-69246",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-69246",
      "released": "2026-08-13T22:19:30Z"
    }
  ],
  "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"
  }
}