MediumFix available

When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the redirect target is a different host, ...

Type: advisorySources: OSV

Security vulnerability affects the php package. When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the redirect target is a different host, a different port, or a downgrade from HTTPS to HTTP.

Products: php
Affected versions: Not specified
Fixed versions: 8.3.35-r0
CVEs: CVE-2026-91766
Confirmed fixed CVEs: Not specified
Updated in this feed: 28 Oct 2026, 10:36 UTC · Revision 1

Source evidence

When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the redirect target is a different host, ...

core-osv · Original source

Published 9 Oct 2026, 00:40 UTC

osv:CLEANSTART-2026-GS69152

php

Fixed versions: 8.3.35-r0

Complete source record

{
  "id": "1ed98cf24d3d4b7d63149d7b356d8b85fec8b19cf00bd6d7c5f1fa6a9db5d691",
  "url": "https://osv.dev/vulnerability/CLEANSTART-2026-GS69152",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the redirect target is a different host, ...",
    "summary": "Security vulnerability affects the php package. When the http:// stream wrapper follows a redirect it forwards the user-supplied Authorization, Cookie and Proxy-Authorization headers unchanged, even when the redirect target is a different host, a different port, or a downgrade from HTTPS to HTTP.",
    "evidence": "osv:CLEANSTART-2026-GS69152",
    "products": [
      {
        "name": {
          "value": "php",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "8.3.35-r0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CLEANSTART-2026-GS69152",
      "aliases": [
        "CLEANSTART-2026-GS69152"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "8.3.35-r0"
                }
              ]
            }
          ],
          "package": {
            "name": "php",
            "purl": "pkg:apk/cleanstart/php",
            "ecosystem": "CleanStart"
          },
          "database_specific": {
            "source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-GS69152.json"
          }
        }
      ],
      "modified": "2026-10-09T01:00:13.171438220Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-91766"
      ],
      "references": [
        "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-GS69152.json",
        "https://osv.dev/vulnerability/CVE-2026-91766",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-91766"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2026-91766",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 108114,
  "published_at": "2026-10-09T00:40:12.165+00:00"
}