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 server fails to validate the HTTP Host header, which can be exploited via DNS rebinding attacks to bypass same-origin policies and extract the full system monitoring dataset from a victim's browser. This vulnerability is resolved in Glances version 4.5.5.
Potential Impact
An attacker exploiting this vulnerability can use DNS rebinding to bypass browser same-origin policies and exfiltrate sensitive system monitoring data exposed by the Glances XML-RPC server. The impact is limited to confidentiality loss; integrity and availability are not affected. The CVSS vector indicates the attack requires network access, high attack complexity, no privileges, and user interaction.
Mitigation Recommendations
Upgrade Glances to version 4.5.5 or later, where the HTTP Host header validation issue is fixed. Patch status is confirmed by the vendor's advisory stating the vulnerability is fixed in 4.5.5. No additional mitigations are specified or required once upgraded.
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 server fails to validate the HTTP Host header, which can be exploited via DNS rebinding attacks to bypass same-origin policies and extract the full system monitoring dataset from a victim's browser. This vulnerability is resolved in Glances version 4.5.5.
Potential Impact
An attacker exploiting this vulnerability can use DNS rebinding to bypass browser same-origin policies and exfiltrate sensitive system monitoring data exposed by the Glances XML-RPC server. The impact is limited to confidentiality loss; integrity and availability are not affected. The CVSS vector indicates the attack requires network access, high attack complexity, no privileges, and user interaction.
Mitigation Recommendations
Upgrade Glances to version 4.5.5 or later, where the HTTP Host header validation issue is fixed. Patch status is confirmed by the vendor's advisory stating the vulnerability is fixed in 4.5.5. No additional mitigations are specified or required once upgraded.
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: 06/25/2026, 18:47:20 UTC
Last updated: 06/25/2026, 20:53:59 UTC
Views: 3
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