{"id":"UBUNTU-CVE-2026-32632","details":"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.","modified":"2026-05-20T16:25:21.643884634Z","published":"2026-03-18T18:16:00Z","upstream":["CVE-2026-32632"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-32632"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-32632"},{"type":"REPORT","url":"https://github.com/nicolargo/glances/security/advisories/GHSA-hhcg-r27j-fhv9"},{"type":"REPORT","url":"https://github.com/nicolargo/glances/commit/5850c564ee10804fdf884823b9c210eb954dd1f9"},{"type":"REPORT","url":"https://github.com/nicolargo/glances/releases/tag/v4.5.2"}],"affected":[{"package":{"name":"glances","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/glances?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3-1build1","2.3-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.3-1ubuntu0.1~esm1","binary_name":"glances"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32632.json"}},{"package":{"name":"glances","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/glances?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10-2","2.11.1-1","2.11.1-2","2.11.1-3","2.11.1-3ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"glances","binary_version":"2.11.1-3ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32632.json"}},{"package":{"name":"glances","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/glances?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.0-1","3.1.1-1","3.1.3-1","3.1.3-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.1.3-1ubuntu0.1~esm1","binary_name":"glances"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32632.json"}},{"package":{"name":"glances","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/glances?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.5-1","3.2.3.1+dfsg-1","3.2.4.2+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"glances","binary_version":"3.2.4.2+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32632.json"}},{"package":{"name":"glances","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/glances?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.0.3+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"glances","binary_version":"3.4.0.3+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32632.json"}},{"package":{"name":"glances","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/glances?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.0.8+dfsg-1","4.3.1+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.3.1+dfsg-1","binary_name":"glances"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32632.json"}},{"package":{"name":"glances","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/glances?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.1+dfsg-1","4.3.3+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"glances","binary_version":"4.3.3+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-32632.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}