All vulnerabilities

Servers and applications

CVE-2018-20171

An issue was discovered in Nagios XI before 5.5.8. The url parameter of rss_dashlet/magpierss/scripts/magpie_simple.php is not filtered, resulting in an XSS vulnerability.

Severity
Medium 6.1
Published
17 Dec 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
5.5.8
Exploit chance
1.6% in the next 30 daysHigher than 75% of CVEs. EPSS by FIRST, 10 Nov 2026
Weakness
Cross-site scripting (CWE-79)
Attack
Over the network · No login needed · Needs someone to click or open something
Attacker can
Read some data · Change some data
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Sources
NVD

Affected software

SoftwareAffected versions
Nagios XIServers and applications · cpe:a:nagios:nagios_xi
  • Every version before 5.5.8

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-20171
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-20171