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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- EPSS probability
- 0.34%
- CWE
- CWE-942
- Published
- 2026-03-18
- Last modified
- 2026-03-19
Affected products
- nicolargo glances
Weakness type
Related vulnerabilities
- CVE-2026-62895 — Azure Arc SQL Server Extension Elevation of Privilege Vulnerability
- CVE-2026-12962 — A Permissive Cross-domain Security Policy with Untrusted Domains in Armoury Crate allows a remote...
- CVE-2026-84452 — Windows ML CLI: CORS misconfig enables localhost RCE
- CVE-2026-53649 — Joro: Unauthenticated Cross-Origin Plugin Upload Leads to RCE
- CVE-2026-82291 — HeyForm Reflects Any Origin in CORS Responses While Allowing Credentials
- CVE-2026-82287 — Rybbit Reflects Any Origin in CORS Responses While Allowing Credentials
- CVE-2026-53656 — FiftyOne App server uses wildcard CORS (Access-Control-Allow-Origin: *), enabling cross-origin reads of local server data
- CVE-2026-63407 — Grav API Plugin: CORS 'Access-Control-Allow-Origin: *' on Authenticated API Responses