CVE-2026-48552

NameCVE-2026-48552
DescriptionNagios Core before 4.5.14 and Nagios XI before 2026R1.7 are vulnerable to DOM-based cross-site scripting in jsonquery.js. Unencoded JSON string values reflected from stored fields are inserted into the DOM without sanitization, allowing attackers to run arbitrary JavaScript in the victim's browser.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-4832-1, DSA-6556-1
Debian Bugs1144495

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
nagios4 (PTS)bookworm4.4.6-4+deb12u1vulnerable
bookworm (security)4.4.6-4+deb12u2fixed
trixie4.4.6-4.1+deb13u1vulnerable
trixie (security)4.4.6-4.1+deb13u2fixed
sid4.5.14+ds-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
nagios4sourcebookworm4.4.6-4+deb12u2DLA-4832-1
nagios4sourcetrixie4.4.6-4.1+deb13u2DSA-6556-1
nagios4source(unstable)4.5.14+ds-11144495

Notes

Fixed by: https://github.com/NagiosEnterprises/nagioscore/commit/acd2365e816dda4a8dce61709f8d3a3b4ab04a6f (nagios-4.5.14)
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