{"apiVersion":"1.0","identifier":"CVE-2026-48554","description":"Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 are vulnerable to authenticated remote code execution via unfiltered NOTIFICATION-family macro substitution through the com_data parameter. When a notification command references $NOTIFICATIONCOMMENT$ or $NOTIFICATIONAUTHOR$ in a shell-reachable position, authenticated UI users can run arbitrary commands as the nagios user. Exploitation requires a non-default configuration in which a notification command references these macros in a shell-executed command line.","publishedAt":"2026-08-12T17:17:27","lastModifiedAt":"2026-08-12T18:17:30","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48554","cvssScore":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00523,"riskScore":0.79,"affectedProduct":"Nagios Core","affectedVersions":"<4.5.14","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-48554","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-48554","en":"https://www.redsauce.net/en/cves/CVE-2026-48554","fr":"https://www.redsauce.net/fr/cves/CVE-2026-48554","pt":"https://www.redsauce.net/pt/cves/CVE-2026-48554","de":"https://www.redsauce.net/de/cves/CVE-2026-48554","sk":"https://www.redsauce.net/sk/cves/CVE-2026-48554","el":"https://www.redsauce.net/el/cves/CVE-2026-48554"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-48554"}}