CVE-2026-33533
Description
A flaw was found in Glances, an open-source system monitoring tool. The Glances XML-RPC server, when activated, sends a wildcard Access-Control-Allow-Origin header and does not validate the Content-Type header. This allows a remote attacker to craft a malicious webpage that can issue a Cross-Origin Resource Sharing (CORS) "simple request" to the server. This vulnerability enables the complete exfiltration of sensitive system monitoring data, including hostname, operating system (OS) version, IP addresses, CPU, memory, disk, and network statistics, as well as the full process list, which may contain sensitive information like tokens or passwords.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Access Control,Other
Technical Impact: Gain Privileges or Assume Identity; Varies by Context
An attacker can access any functionality that is inadvertently accessible to the source.
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