Fiche vulnérabilité
CVE-2026-34839 : faille moyenne nicolargo glances (CVSS 6.5)
Description
Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.4, the Glances web server exposes a REST API (`/api/4/*`) that is accessible without authentication and allows cross-origin requests from any origin due to a permissive CORS policy (`Access-Control-Allow-Origin: *`). This allows a malicious website to read sensitive system information from a running Glances instance in the victim’s browser, leading to cross-origin data exfiltration. While a previous advisory exists for XML-RPC CORS issues, this report demonstrates that the REST API (`/api/4/*`) is also affected and exposes significantly more sensitive data. Version 4.5.4 patches the issue.
En bref
- Sévérité
- Moyenne (CVSS 6.5)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 21 avr. 2026
- Dernière mise à jour
- 17 juin 2026
Produits concernés
- nicolargo glances