CVE-2026-46611
Description
A vulnerability in the Glances XML-RPC server fails to properly validate HTTP Host headers, enabling DNS rebinding attacks. If a user is tricked into visiting a malicious website, a remote attacker can exploit this flaw to exfiltrate sensitive system monitoring data.
Statement
This moderate DNS rebinding vulnerability in the Glances XML-RPC server allows for information disclosure. An attacker can exfiltrate system monitoring data, provided they trick a user into visiting a malicious site.
Mitigation
The XML-RPC server is a legacy interface started via the -s or --server flags. To maintain remote monitoring functionality securely, operators should migrate to the actively maintained REST API by starting Glances with the -w or --webserver flag instead. The REST API component is protected against DNS rebinding attacks.
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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