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

Glances's REST/WebUI Lacks Host Validation and Remains Exposed to DNS Rebinding

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N

源验证错误

glances 安全漏洞

glances是Nicolas Hennion个人开发者的一款系统监测工具。 glances 4.5.2之前版本存在安全漏洞，该漏洞源于REST/WebUI应用未应用主机允许列表，可能导致DNS重绑定攻击，使攻击者控制的域访问API和WebUI。

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