Cross-site Request Forgery (CSRF) Affecting nagios4 package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.17% (7th percentile)

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  • Snyk IDSNYK-DEBIAN13-NAGIOS4-19271306
  • published27 Aug 2026
  • disclosed26 Aug 2026

Introduced: 26 Aug 2026

NewCVE-2026-48549  (opens in a new tab)
CWE-352  (opens in a new tab)

How to fix?

There is no fixed version for Debian:13 nagios4.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nagios4 package and not the nagios4 package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

Nagios Core before 4.5.13 and Nagios XI before 2026R1.5 contains a CSRF vulnerability in cmd.cgi. When no Cookie header is present, the double-submit cookie protection can be bypassed by supplying matching NagFormId and nagFormId values in the POST body, allowing a cross-site request to execute Nagios commands as a currently authenticated user.

CVSS Base Scores

version 3.1