{"id":"CVE-2026-46608","aliases":["GHSA-87qc-fj39-wccr","PYSEC-2026-2495"],"url":"https://o3.security/vulnerability/CVE-2026-46608","summary":"Glances: XML-RPC Multi-Origin CORS Configuration Silently Falls Back to Wildcard (Incomplete Fix for CVE-2026-33533)","details":"Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.5, the Glances XML-RPC server (glances -s) introduced a configurable CORS origin list in version 4.5.3 as a mitigation for CVE-2026-33533. However, the implementation silently falls back to Access-Control-Allow-Origin: * whenever cors_origins contains more than one entry. An operator who configures an explicit two-entry allowlist (e.g. two internal dashboard origins) intending to restrict browser access instead receives the unrestricted wildcard. A malicious web page served from any origin can issue a CORS simple request to /RPC2 and read the full system monitoring dataset without the victim's knowledge. This vulnerability is fixed in 4.5.5.","published":"2026-06-25T18:05:48.123Z","modified":"2026-08-07T11:51:15.023302048Z","cvss":{"score":7.4,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N"},"epss":{"score":0.00232,"percentile":0.14109,"asOf":"2026-08-10"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"glances","fixedVersion":"4.5.5"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/nicolargo/glances/releases/tag/v4.5.5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46608.json"},{"type":"ADVISORY","url":"https://github.com/nicolargo/glances/security/advisories/GHSA-87qc-fj39-wccr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46608"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:51:15.023302048Z"}}