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Glances: REST API CORS Credentials Guard Uses Exact-Match Instead of Membership Test — Bypassed by Any Multi-Origin Allowlist Containing the Wildcard

🗓️ 17 Aug 2026 17:04:51Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 6 Views

Glances REST API CORS guard uses exact-match comparison, allowing any multi-origin list containing "*" to bypass credential restriction and expose authenticated monitoring data to any website.

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17 Aug 2026 17:04Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.17.4
EPSS0.00232
SSVC
6