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CVE-2026-46608— Glances: XML-RPC Multi-Origin CORS Configuration Silently Falls Back to Wildcard (Incomplete Fix for CVE-2026-33533)

Quick assessment

Affected
nicolargo glances
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nicolas Hennion Glances是Nicolas Hennion个人开发者的一款系统监控工具。 Nicolas Hennion Glances 4.5.5之前版本存在安全漏洞，该漏洞源于CORS源列表实现中存在配置错误，当cors_origins包含多个条目时会静默回退到Access-Control-Allow-Origin: *，可能导致恶意网页从任意源向/RPC2发出CORS简单请求并读取完整的系统监控数据集。

CVSS 7.4 · High EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
nicolargo glances < 4.5.5 affected
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I. Basic Information for CVE-2026-46608

Vulnerability Information
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Vulnerability Title
Glances: XML-RPC Multi-Origin CORS Configuration Silently Falls Back to Wildcard (Incomplete Fix for CVE-2026-33533)
Source: CVE Program / CVE List V5
Vulnerability Description
Glances is an open-source system cross-platform monitoring tool. Prior to 4.5.5, the Glances XML-RPC server (glances -s) introduced a configurable CORS origin list in version 4.5.3 as a mitigation for CVE-2026-33533. However, the implementation silently falls back to Access-Control-Allow-Origin: * whenever cors_origins contains more than one entry. An operator who configures an explicit two-entry allowlist (e.g. two internal dashboard origins) intending to restrict browser access instead receives the unrestricted wildcard. A malicious web page served from any origin can issue a CORS simple request to /RPC2 and read the full system monitoring dataset without the victim's knowledge. This vulnerability is fixed in 4.5.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
宽松定义的白名单
Source: CVE Program / CVE List V5
Vulnerability Title
Nicolas Hennion Glances 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nicolas Hennion Glances是Nicolas Hennion个人开发者的一款系统监控工具。 Nicolas Hennion Glances 4.5.5之前版本存在安全漏洞，该漏洞源于CORS源列表实现中存在配置错误，当cors_origins包含多个条目时会静默回退到Access-Control-Allow-Origin: *，可能导致恶意网页从任意源向/RPC2发出CORS简单请求并读取完整的系统监控数据集。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nicolargo glances < 4.5.5 -

II. Public POCs for CVE-2026-46608

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8675 chars
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III. Intelligence Information for CVE-2026-46608

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Vendor Advisories for CVE-2026-46608 (1)

Vendor Pages for CVE-2026-46608 (1)

Same Patch Batch · nicolargo · 2026-06-25 · 5 CVEs total

CVE-2026-53925 7.8 HIGH Glances: Arbitrary file write and command execution via `secure_popen` redirection and cha
CVE-2026-46607 7.8 HIGH Glances: Insecure Pickle Deserialization in Version Cache Leads to Arbitrary Code Executio
CVE-2026-46606 7.8 HIGH Glances: Command Injection via KVM/QEMU VM Domain Names in glances/plugins/vms/engines/vir
CVE-2026-46611 5.3 MEDIUM Glances: XML-RPC Server Missing Host Header Validation Enables DNS Rebinding Attack

IV. Related Vulnerabilities

Same product: glances
Same vendor: nicolargo
Same weakness: CWE-183

V. Comments for CVE-2026-46608

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