CVE-2026-32610

Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.2, the Glances REST API web server ships with a default CORS configuration that sets `allow_origins=["*"]` combined with `allow_credentials=True`. When both of these options are enabled together, Starlette's `CORSMiddleware` reflects the requesting `Origin` header value in the `Access-Control-Allow-Origin` response header instead of returning the literal `*` wildcard. This effectively grants any website the ability to make credentialed cross-origin API requests to the Glances server, enabling cross-site data theft of system monitoring information, configuration secrets, and command line arguments from any user who has an active browser session with a Glances instance. Version 4.5.2 fixes the issue.

• CWE-942

• https://github.com/nicolargo/glances/commit/4465169b71d93991f1e49740fe02428291099832Patch
• https://github.com/nicolargo/glances/releases/tag/v4.5.2Product, Release Notes
• https://github.com/nicolargo/glances/security/advisories/GHSA-9jfm-9rc6-2hfqExploit, Mitigation, Vendor Advisory

Published

Mar 18, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

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