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CVE-2026-33533— Glances Vulnerable to Cross-Origin System Information Disclosure via XML-RPC Server CORS Wildcard

Quick assessment

Affected
nicolargo glances
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

glances是Nicolas Hennion个人开发者的一款系统监测工具。 Glances 4.5.3之前版本存在安全漏洞，该漏洞源于XML-RPC服务器缺少Content-Type验证和CORS配置不当，可能导致数据泄露。

AI Predicted 5.3 Difficulty: Easy EPSS 0.47% · P39
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I. Basic Information for CVE-2026-33533

Vulnerability Information
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Vulnerability Title
Glances Vulnerable to Cross-Origin System Information Disclosure via XML-RPC Server CORS Wildcard
Source: CVE Program / CVE List V5
Vulnerability Description
Glances is an open-source system cross-platform monitoring tool. Prior to version 4.5.3, the Glances XML-RPC server (activated with glances -s or glances --server) sends Access-Control-Allow-Origin: * on every HTTP response. Because the XML-RPC handler does not validate the Content-Type header, an attacker-controlled webpage can issue a CORS "simple request" (POST with Content-Type: text/plain) containing a valid XML-RPC payload. The browser sends the request without a preflight check, the server processes the XML body and returns the full system monitoring dataset, and the wildcard CORS header lets the attacker's JavaScript read the response. The result is complete exfiltration of hostname, OS version, IP addresses, CPU/memory/disk/network stats, and the full process list including command lines (which often contain tokens, passwords, or internal paths). This issue has been patched in version 4.5.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
过度许可的跨域白名单
Source: CVE Program / CVE List V5
Vulnerability Title
glances 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
glances是Nicolas Hennion个人开发者的一款系统监测工具。 Glances 4.5.3之前版本存在安全漏洞，该漏洞源于XML-RPC服务器缺少Content-Type验证和CORS配置不当，可能导致数据泄露。
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 < 4.5.3 -

II. Public POCs for CVE-2026-33533

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III. Intelligence Information for CVE-2026-33533

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Patches & Fixes for CVE-2026-33533 (1)

Vendor Advisories for CVE-2026-33533 (1)

Vendor Pages for CVE-2026-33533 (1)

IV. Related Vulnerabilities

Same product: glances
Same vendor: nicolargo
Same weakness: CWE-942

V. Comments for CVE-2026-33533

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