CVE-2026-33182: Php Url Join Absolute Override

A URL or path joining function returns an endpoint directly if it evaluates to a valid absolute URL, unconditionally overriding the base URL. If this endpoint originates from user input, this bypasses routing restrictions and can cause Server-Side Request Forgery (SSRF) and credential leakage. To remediate this, ensure the base URL is intended to be bypassed

Provally CuratedPublic repositoryMediumMedium confidenceVerifiedApache-2.0PHP
greprules fetch cve-2026-33182-php-url-join-absolute-override --engine opengrep

Description

A URL or path joining function returns an endpoint directly if it evaluates to a valid absolute URL, unconditionally overriding the base URL. If this endpoint originates from user input, this bypasses routing restrictions and can cause Server-Side Request Forgery (SSRF) and credential leakage. To remediate this, ensure the base URL is intended to be bypassed