CVE-2026-46611

Glances: XML-RPC Server Missing Host Header Validation Enables DNS Rebinding Attack

CVSS 5.3 MEDIUMEPSS 0.2%CWE-346 CWE-350

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.2%KEV nãoPoC —Patch —

Lifecycle

Jun 25, 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected products

nicolargo · glances

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References

https://github.com/nicolargo/glances/releases/tag/v4.5.5 https://github.com/nicolargo/glances/security/advisories/GHSA-w856-8p3r-p338