Bug 2493117 (CVE-2026-46611)

Summary: CVE-2026-46611 glances: Glances: Information disclosure via DNS rebinding attack
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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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.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2493353, 2493354    
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Description OSIDB Bzimport 2026-06-25 19:03:13 UTC
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.