Vulnerability in glances (CVE-2026-32634)
Summary
Vulnerability in glances (CVE-2026-32634). Confidential information can be exposed externally. Exploitable via Host header. Mitigation: upgrade to 4.5.2 or later.
Original description
The description as published by the source.
Summary
In Central Browser mode, Glances stores both the Zeroconf-advertised server name and the discovered IP address for dynamic servers, but later builds connection URIs from the untrusted advertised name instead of the discovered IP. When a dynamic server reports itself as protected, Glances also uses that same untrusted name as the lookup key for saved passwords and the global [passwords] default credential.
An attacker on the same local network can advertise a fake Glances service over Zeroconf and cause the browser to automatically send a reusable Glances authentication secret to an attacker-controlled host. This affects the background polling path and the REST/WebUI click-through path in Central Browser mode.
Details
Dynamic server discovery keeps both a short name and a separate ip:
# glances/servers_list_dynamic.py:56-61
def add_server(self, name, ip, port, protocol='rpc'):
new_server = {
'key': name,
'name': name.split(':')[0], # Short name
'ip': ip, # IP address seen by the client
'port': port,
...
'type': 'DYNAMIC',
}
The Zeroconf listener populates those fields directly from the service advertisement:
# glances/servers_list_dynamic.py:112-121
new_server_ip = socket.inet_ntoa(address)
new_server_port = info.port
...
self.servers.add_server(
srv_name,
new_server_ip,
new_server_port,
protocol=new_server_protocol,
)
However, the Central Browser c…
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-32634 has been found in glances.
Attackers can target a specific entry point like Host header over the network to misuse the product.
Confidential information can be exposed externally.
What to do: upgrade glances to 4.5.2 or later.
If unsure, ask your IT team or search "glances CVE-2026-32634" on the vendor's site.
CVE-2026-32634 (glances) — CWE-346
Attack vector: adjacent-network / unauthenticated / no user interaction
Attack surface: Host header / name / default / _glances._tcp.local.
Patched: 4.5.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-346) exists in glances. Attackers reach the vulnerable code path via Host header without authentication.
Check the vendor advisory for the affected versions of glances. Attack surface: Host header / name / default / _glances._tcp.local..
Severity: ?. Confidential information can be exposed externally.
Update to 4.5.2.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'glances' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'glances' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
glancesを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade glances to 4.5.2ステージング環境で 4.5.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-32634 glances
- Ubuntu UBUNTU-CVE-2026-32634 glances
References
- advisory nvd.nist.gov
- package github.com
- web github.com
- web github.com
- web github.com