CVE-2018-15712

Nagios Xi vulnerability

CVSS

6.1

EPSS

48.6%

EPSS pct

99th

Exploited

No known

Nagios XI 5.5.6 allows reflected cross site scripting from remote unauthenticated attackers via the host parameter in api_tool.php.

Affected vendor

Nagios

Affected product

Nagios Xi

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2018-11-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 48.6% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-2018-15712

Confirm whether Nagios Nagios Xi is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-15712.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-15712

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-15712 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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