CVE-2026-48548— Nagios Core CSRF via cmd.cgi
Quick assessment
Affected
Nagios Enterprises, LLC. Nagios Core
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.
在 Nagios Core 4.5.12 之前的版本中， 存在跨站请求伪造（CSRF）漏洞。该漏洞的成因是：当 Cookie 缺失时，CSRF 防护机制未能有效拦截，导致验证通过。攻击者可构造恶意的跨站 POST 请求，利用当前已认证用户的身份，在用户不知晓或未经其同意的情况下，执行任意的 Nagios 命令。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Nagios Enterprises, LLC. | Nagios Core | < 4.5.12 |
affected |
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I. Basic Information for CVE-2026-48548
Vulnerability Information
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Vulnerability Title
Nagios Core CSRF via cmd.cgi
Source: CVE Program / CVE List V5
Vulnerability Description
Nagios Core before 4.5.12 contains a cross-site request forgery vulnerability in cmd.cgi where the CSRF protection mechanism passes validation when the NagFormId cookie is absent. Attackers can craft a malicious cross-site POST request to execute arbitrary Nagios commands as a currently authenticated user without their knowledge or consent.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Nagios Enterprises, LLC. | Nagios Core | 0 ~ 4.5.12 | - |
|
II. Public POCs for CVE-2026-48548
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-48548 (2)
-
🔗 Nagios Core CSRF via cmd.cgi | Advisories | VulnCheck third-party-advisory
-
Vendor Pages for CVE-2026-48548 (1)
IV. Related Vulnerabilities
Same product: Nagios Core
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CVE-2026-48549
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Same weakness: CWE-352
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V. Comments for CVE-2026-48548
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