CVE-2026-67354: Guzzle Referer Uri Fragment Leak

When stripping user info from a PSR-7 URI (e.g. for Referer headers), the URI fragment is not stripped using withFragment(''). This can leak sensitive data contained in URI fragments (such as access tokens or state values) to redirect targets.

Provally CuratedPublic repositoryMediumMedium confidenceVerifiedApache-2.0PHP
greprules fetch cve-2026-67354-guzzle-referer-uri-fragment-leak --engine opengrep

Description

When stripping user info from a PSR-7 URI (e.g. for Referer headers), the URI fragment is not stripped using withFragment(''). This can leak sensitive data contained in URI fragments (such as access tokens or state values) to redirect targets.