Bug 2517508 (CVE-2026-68517)

Summary: CVE-2026-68517 glances: Glances: Information disclosure via REST API CORS bypass
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Glances. The REST API's Cross-Origin Resource Sharing (CORS) protection mechanism incorrectly validates allowed origins. This vulnerability occurs because the `cors_origins` guard uses exact list equality instead of checking for wildcard membership. A remote attacker could exploit this by crafting a malicious website that, when visited by a previously authenticated user, could bypass CORS protection and expose authenticated REST API data, leading to information disclosure.
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Bug Depends On: 2521875, 2521878    
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Description OSIDB Bzimport 2026-08-17 17:21:42 UTC 
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.6, the cors_origins guard in glances/outputs/glances_restful_api.py uses exact list equality instead of wildcard membership, allowing a multi-origin list containing the wildcard to retain cors_credentials and expose authenticated REST API data to an untrusted website visited by a previously authenticated user. This issue is fixed in 4.5.6.