guzzle — security advisory

{
  "id": "01ca706ff07466061d3b411f44c24ff0f4dc9bc6f9747ef2b26556dcb01c8130",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-69246",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-69246",
    "summary": "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's checks excluded and read whatever the host exposes of the response. The same divergence moves Guzzle's 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.",
    "evidence": "osv:UBUNTU-CVE-2026-69246",
    "products": [
      {
        "name": {
          "value": "guzzle",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "7.4.5-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "guzzle",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "7.9.2-0.1build1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "7.13.1-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "7.15.1-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "7.15.2-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "7.15.3-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "guzzle",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "7.9.2-0.1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "7.9.2-0.1build1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2026-69246",
      "aliases": [
        "UBUNTU-CVE-2026-69246"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "guzzle",
            "purl": "pkg:deb/ubuntu/guzzle?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "7.4.5-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-69246.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "php-guzzlehttp-guzzle",
                "binary_version": "7.4.5-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "guzzle",
            "purl": "pkg:deb/ubuntu/guzzle?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "7.9.2-0.1build1",
            "7.13.1-1",
            "7.15.1-1",
            "7.15.2-1",
            "7.15.3-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-69246.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "php-guzzlehttp-guzzle",
                "binary_version": "7.15.3-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "guzzle",
            "purl": "pkg:deb/ubuntu/guzzle?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "7.9.2-0.1",
            "7.9.2-0.1build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-69246.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "php-guzzlehttp-guzzle",
                "binary_version": "7.9.2-0.1build1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:59:29.160578814Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-69246"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-69246",
        "https://www.cve.org/CVERecord?id=CVE-2026-69246",
        "https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33",
        "https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4",
        "https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf",
        "https://github.com/guzzle/guzzle/pull/3907",
        "https://github.com/guzzle/guzzle/pull/3908",
        "https://github.com/guzzle/guzzle/releases/tag/7.15.2",
        "https://github.com/guzzle/guzzle/releases/tag/8.0.1"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-69246",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 359665,
  "published_at": "2026-08-03T21:16:00+00:00"
}