CVE-2026-48548
CVE-2026-48548 · Nagios Core CSRF via cmd.cgi
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.9 · Medium · EPSS 0.2% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
nagios core
- Versions
- ≥ 0, < 4.5.12: Affected (semver)
Update to 4.5.12
nagios4 Debian:12
- Versions
- 4.4.6-4
- Affected ranges
- ECOSYSTEM: < 4.4.6-4+deb12u1
Update to 4.4.6-4+deb12u1
nagios4 Debian:13
- Versions
- 4.4.6-4.1
- Affected ranges
- ECOSYSTEM: < 4.4.6-4.1+deb13u1
Update to 4.4.6-4.1+deb13u1
nagios4 Debian:14
- Versions
- 4.4.6-4.1
- Affected ranges
- ECOSYSTEM: < 4.5.12+ds-1
Update to 4.5.12+ds-1
nagios4 Ubuntu:20.04:LTS
- Versions
- 4.3.4-3
- 4.3.4-3ubuntu0.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nagios4 Ubuntu:22.04:LTS
- Versions
- 4.4.6-4
- 4.4.6-4ubuntu0.22.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nagios4 Ubuntu:24.04:LTS
- Versions
- 4.4.6-4
- 4.4.6-4ubuntu0.24.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nagios4 Ubuntu:26.10
- Versions
- 4.4.6-4.1ubuntu2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
nagios4 Ubuntu:26.04:LTS
- Versions
- 4.4.6-4.1ubuntu1
- 4.4.6-4.1ubuntu2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published