medium5.3
CVE-2026-46611
Glances: XML-RPC Server Missing Host Header Validation Enables DNS Rebinding Attack
Impact
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.5, the Glances XML-RPC server (glances -s, implemented in glances/server.py) does not validate the HTTP Host header, leaving it vulnerable to DNS rebinding attacks. An attacker can exploit DNS rebinding to exfiltrate the full system monitoring dataset from a victim's browser. This vulnerability is fixed in 4.5.5.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | glances | < 4.5.5 | 4.5.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-w856-8p3r-p338
- https://github.com/nicolargo/glances/security/advisories/GHSA-w856-8p3r-p338
- https://github.com/nicolargo/glances/releases/tag/v4.5.5
- https://nvd.nist.gov/vuln/detail/CVE-2026-46611
- https://github.com/nicolargo/glances
- https://github.com/pypa/advisory-database/tree/main/vulns/glances/PYSEC-2026-2498.yaml
- https://pypi.org/project/glances