CVE-2026-46611: CWE-346: Origin Validation Error in nicolargo glances
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.
AI Analysis
Technical Summary
CVE-2026-46611 describes an origin validation error (CWE-346) in the Glances XML-RPC server component (glances -s) before version 4.5.5. The vulnerability arises because the server fails to validate the HTTP Host header, enabling DNS rebinding attacks. Exploitation could lead to unauthorized data exfiltration of system monitoring information accessible through the victim's browser. The vulnerability is fixed in Glances version 4.5.5.
Potential Impact
An attacker exploiting this vulnerability can use DNS rebinding to bypass same-origin policies and extract sensitive system monitoring data from a victim's browser session connected to the Glances XML-RPC server. The confidentiality of system monitoring data is compromised. There is no impact on integrity or availability reported.
Mitigation Recommendations
Upgrade Glances to version 4.5.5 or later, where this vulnerability is fixed. Since the vendor advisory confirms the fix in 4.5.5, applying this update fully mitigates the issue. No additional mitigations are specified.
CVE-2026-46611: CWE-346: Origin Validation Error in nicolargo glances
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.
CVSS v3.1
Score 5.3medium
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-46611 describes an origin validation error (CWE-346) in the Glances XML-RPC server component (glances -s) before version 4.5.5. The vulnerability arises because the server fails to validate the HTTP Host header, enabling DNS rebinding attacks. Exploitation could lead to unauthorized data exfiltration of system monitoring information accessible through the victim's browser. The vulnerability is fixed in Glances version 4.5.5.
Potential Impact
An attacker exploiting this vulnerability can use DNS rebinding to bypass same-origin policies and extract sensitive system monitoring data from a victim's browser session connected to the Glances XML-RPC server. The confidentiality of system monitoring data is compromised. There is no impact on integrity or availability reported.
Mitigation Recommendations
Upgrade Glances to version 4.5.5 or later, where this vulnerability is fixed. Since the vendor advisory confirms the fix in 4.5.5, applying this update fully mitigates the issue. No additional mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-15T19:34:14.011Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3d73fb4853345fc14dfa2e
Added to database: 06/25/2026, 18:31:23 UTC
Last enriched: 07/02/2026, 22:43:34 UTC
Last updated: 08/09/2026, 12:41:11 UTC
Views: 60
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