AUGUST 15, 2026
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Case File

CVE-2026-48550

MEDIUM · CVSS 6.1 EPSS 0.27% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-12 · Last synced 2026-08-15

CyberRota Analysis

AI-Generated

Nagios Core versions prior to 4.5.14 and Nagios XI versions before 2026R1.7 are susceptible to reflected cross-site scripting through the cmd.cgi endpoint, specifically via the NagFormId parameter. This vulnerability allows unauthenticated remote attackers to execute arbitrary JavaScript in the browsers of authenticated users, potentially leading to data theft or session hijacking. Organizations using these versions of Nagios should prioritize patching to mitigate the risk of exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-48550
Severity
MEDIUM
CVSS
6.1
EPSS
0.27%
Java

Original NVD Description

Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 are vulnerable to reflected cross-site scripting in cmd.cgi via the NagFormId parameter. An unauthenticated remote attacker can craft a malicious link that, when followed by an authenticated user, executes arbitrary JavaScript in the victim's browser.