CVE-2026-32632 - Glances's REST/WebUI Lacks Host Validation and Remains Exposed to DNS Rebinding

CVE-2026-32632 - Glances's REST/WebUI Lacks Host Validation and Remains Exposed to DNS Rebinding

https://cvefeed.io/rssfeed/latest.atom / Wed, 03/18/2026 - 20:07
CVE ID :CVE-2026-32632
Published : March 18, 2026, 6:16 p.m. | 44 minutes ago
Description :Glances is an open-source system cross-platform monitoring tool. Glances recently added DNS rebinding protection for the MCP endpoint, but prior to version 4.5.2, the main REST/WebUI FastAPI application still accepts arbitrary `Host` headers and does not apply `TrustedHostMiddleware` or an equivalent host allowlist. As a result, the REST API, WebUI, and token endpoint remain reachable through attacker-controlled domains in classic DNS rebinding scenarios. Once the victim browser has rebound the attacker domain to the Glances service, same-origin policy no longer protects the API because the browser considers the rebinding domain to be the origin. This is a distinct issue from the previously reported default CORS weakness. CORS is not required for exploitation here because DNS rebinding causes the victim browser to treat the malicious domain as same-origin with the rebinding target. Version 4.5.2 contains a patch for the issue.
Severity: 5.9 | MEDIUM
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