CVE-2026-32632 (GCVE-0-2026-32632)
Vulnerability from cvelistv5 – Published: 2026-03-18 17:47 – Updated: 2026-03-18 18:15
VLAI
EPSS
VEX
Title
Glances's REST/WebUI Lacks Host Validation and Remains Exposed to DNS Rebinding
Summary
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)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-18 18:15 UTC
CWE
- CWE-346 - Origin Validation Error
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/nicolargo/glances/security/adv… | x_refsource_CONFIRM |
| https://github.com/nicolargo/glances/commit/5850c… | x_refsource_MISC |
| https://github.com/nicolargo/glances/releases/tag… | x_refsource_MISC |
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