CVE-2026-46491 SimpleSAMLphp casserver FileSystemTicketStore path traversal allows out-of-ticket-directory read/unserialize and conditional deletion

SimpleSAMLphp-casserver is a CAS 1.0 and 2.0 compliant CAS server in the form of a SimpleSAMLphp module. Prior to version 7.0.3, simplesamlphp-module-casserver builds file paths for the file-based CAS ticket store by directly concatenating the configured ticket directory with an attacker-controll...

Directory Traversal

Overview Affected versions of this package are vulnerable to Directory Traversal via the FileSystemTicketStore process. An attacker can read and unserialize files outside the intended directory, and conditionally delete files, by supplying crafted path traversal sequences in public CAS validation...

SimpleSAMLphp casserver FileSystemTicketStore path traversal allows out-of-ticket-directory read/unserialize and conditional deletion

Summary simplesamlphp-module-casserver builds file paths for the file-based CAS ticket store by directly concatenating the configured ticket directory with an attacker-controlled ticket identifier. Public CAS validation/proxy endpoints pass attacker-controlled ticket / pgt query parameters into...