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.
Published: 2026-08-26
Score: 6.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Wed, 26 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 26 Aug 2026 16:00:00 +0000

Type Values Removed Values Added
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.
Title Nagios Core CSRF via cmd.cgi
First Time appeared Nagios
Nagios nagios Core
Weaknesses CWE-352
CPEs cpe:2.3:a:nagios:nagios_core:*:*:*:*:*:*:*:*
Vendors & Products Nagios
Nagios nagios Core
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Nagios Nagios Core
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-26T17:29:31.213Z

Reserved: 2026-05-21T18:34:46.418Z

Link: CVE-2026-48548

cve-icon Vulnrichment

Updated: 2026-08-26T17:29:23.539Z

cve-icon NVD

Status : Received

Published: 2026-08-26T16:16:26.790

Modified: 2026-08-26T18:16:33.860

Link: CVE-2026-48548

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-26T17:30:10Z

Weaknesses
  • CWE-352

    Cross-Site Request Forgery (CSRF)