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. A server that can steer a redirect therefore receives credentials that were only meant for the original origin. This is the same class of issue that libcurl fixed in 7.58.0 ( CVE-2018-1000007 https://github.com/advisories/GHSA-g7x2-hrfp-pv5f ).
History

Fri, 23 Oct 2026 14:00:00 +0000

Type Values Removed Values Added
First Time appeared Php
Php php
CPEs cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
Vendors & Products Php
Php php

Mon, 28 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 26 Sep 2026 08:45:00 +0000

Type Values Removed Values Added
First Time appeared Php Group
Php Group php
Vendors & Products Php Group
Php Group php

Sat, 26 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-201
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 25 Sep 2026 20:45:00 +0000

Type Values Removed Values Added
Description 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. A server that can steer a redirect therefore receives credentials that were only meant for the original origin. This is the same class of issue that libcurl fixed in 7.58.0 ( CVE-2018-1000007 https://github.com/advisories/GHSA-g7x2-hrfp-pv5f ).
Title Cross-origin credential leak in HTTP stream wrapper redirects
Weaknesses CWE-200
CWE-522
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: php

Published: 2026-09-25T20:40:25.040Z

Updated: 2026-09-28T13:31:31.921Z

Reserved: 2026-09-15T00:38:24.146Z

Link: CVE-2026-91766

cve-icon Vulnrichment

Updated: 2026-09-28T13:24:47.958Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-25T21:17:24.673

Modified: 2026-10-23T13:46:07.313

Link: CVE-2026-91766

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-09-25T20:40:25Z

Links: CVE-2026-91766 - Bugzilla