CVE-2026-46611

Glances: XML-RPC Server Missing Host Header Validation Enables DNS Rebinding Attack

Published Jun 25, 2026 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.5, the Glances XML-RPC server (glances -s, implemented in glances/server.py) does not validate the HTTP Host header, leaving it vulnerable to DNS rebinding attacks. An attacker can exploit DNS rebinding to exfiltrate the full system monitoring dataset from a victim's browser. This vulnerability is fixed in 4.5.5.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-w856-8p3r-p338 Glances: XML-RPC Server Missing Host Header Validation Enables DNS Rebinding Attack
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Nicolargo
Nicolargo glances
Vendors & Products Nicolargo
Nicolargo glances
Type Values Removed Values Added
Description Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.5, the Glances XML-RPC server (glances -s, implemented in glances/server.py) does not validate the HTTP Host header, leaving it vulnerable to DNS rebinding attacks. An attacker can exploit DNS rebinding to exfiltrate the full system monitoring dataset from a victim's browser. This vulnerability is fixed in 4.5.5.
Title Glances: XML-RPC Server Missing Host Header Validation Enables DNS Rebinding Attack
Weaknesses CWE-346
CWE-350
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jun 26, 2026, 2:14 AM
Reserved
May 15, 2026, 7:34 PM
Status
Deferred
Published
Jun 25, 2026, 7:16 PM
Modified
Oct 25, 2026, 10:10 PM
Severity
Moderate
Public date
Jun 25, 2026, 6:00 PM