Description
Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 contain a cross-site request forgery protection bypass via a self-supplied double-submit cookie. An attacker can supply matching cookie and request parameter values to bypass CSRF protection, enabling unauthenticated attackers to run commands as authorized users via malicious links.
Published: 2026-08-12
Score: 6.1 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 12 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
Description Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 contain a cross-site request forgery protection bypass via a self-supplied double-submit cookie. An attacker can supply matching cookie and request parameter values to bypass CSRF protection, enabling unauthenticated attackers to run commands as authorized users via malicious links.
Title Nagios Core / XI CSRF Protection Bypass via Double-Submit Cookie
Weaknesses CWE-352
References
Metrics cvssV3_1

{'score': 7.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N'}

cvssV4_0

{'score': 6.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-12T16:32:16.601Z

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

Link: CVE-2026-48551

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-12T17:17:27.353

Modified: 2026-08-12T17:17:27.353

Link: CVE-2026-48551

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses