CVE-2026-32633 Glances's Browser API Exposes Reusable Downstream Credentials via `/api/4/serverslist`
An unauthenticated attacker can retrieve reusable credentials for downstream servers via the Glances Browser API when started without a password.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-32633?
CVE-2026-32633 is a critical vulnerability in nicolargo glances, published on 18 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.2, in Central Browser mode, the `/api/4/serverslist` endpoint returns raw server objects from `GlancesServersList.get_servers_list()`. Those objects are mutated in-place during background polling and can contain a `uri` field with embedded HTTP Basic credentials for downstream Glances servers, using the reusable pbkdf2-derived Glances authentication secret. If the front Glances Browser/API instance is started without `--password`, which is supported and common for internal network deployments, `/api/4/serverslist` is completely unauthenticated. Any network user who can reach the Browser API can retrieve reusable credentials for protected downstream Glances servers once they have been polled by the browser instance. Version 4.5.2 fixes the issue.
Which versions are affected by CVE-2026-32633?
3 open source packages ship an affected version, including glances and Glances. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
glances PyPI | All versions | 4.5.2 |
glances PyPI | All versions | 4.5.2 |
Glances PyPI | All versions | 4.5.2 |
Products include Nicolargo Glances.
How do I fix CVE-2026-32633?
Upgrade glances to 4.5.2 or later.
Is CVE-2026-32633 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32633 exists.
Other vulnerabilities in nicolargo glances
- CVE-2026-32596 Glances exposes the REST API without authentication
- CVE-2026-30928 Glances Exposes Unauthenticated Configuration Secrets
- CVE-2026-32610 Glances's Default CORS Configuration Allows Cross-Origin Credential Theft
- CVE-2026-32634 Glances Central Browser Autodiscovery Leaks Reusable Credentials to Zeroconf-Spoofed Servers
- CVE-2026-33641 Glances Vulnerable to Command Injection via Dynamic Configuration Values
Sources
Also known as DEBIAN-CVE-2026-32633, GHSA-r297-p3v4-wp8m, PYSEC-2026-343, UBUNTU-CVE-2026-32633.