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Fencer Intel
medium 5.4

CVE-2018-18245 json

Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified chec…

published 7y ago modified 4mo ago also EUVD-2018-9981

cvss
5.4
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

Nagios Core 4.4.2 has XSS via the alert summary reports of plugin results, as demonstrated by a SCRIPT element delivered by a modified check_load plugin to NRPE.

Patch / fix

  • nagios4 Debian 14, Debian 13, Debian 12 4.3.4-3

debian advisories DEBIAN-CVE-2018-18245

  • nagios openSUSE Tumbleweed 4.4.6-2.5
  • nagios Package Hub 15 SP1 4.4.5-bp151.4.3.1
  • nagios openSUSE Leap 15.1 4.4.5-lp151.5.4.1

opensuse advisories openSUSE-SU-2024:11073-1openSUSE-SU-2020:0517-1openSUSE-SU-2020:0500-1

Is CVE-2018-18245 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-18245 updated cvss 4.7

nagios: Stored XSS via Plugin Output

  • Red Hat Mobile Application Platform 4 nagios
    affected: no fix planned “Out of support scope”
  • Red Hat Storage 3 nagios, nagios-common
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.54% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • herolab.usd.de https://herolab.usd.de/wp-content/uploads/sites/4/2018/12/usd20180026.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 5.4 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.