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.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-346"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32632.json"
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:nicolargo:glances:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "4.5.2"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "5850c564ee10804fdf884823b9c210eb954dd1f9"
}
],
"source": "REFERENCES_COMMIT"
},
{
"original_tag": "v4.5.2",
"range": [
{
"fixed": "a56a5b78ef931b1d1391c9898bf735a5b4323ec9"
}
],
"source": "REFERENCES_TAG"
}
]
}