SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2018-15713

Nagios XI 5.5.6 allows persistent cross site scripting from remote authenticated attackers via the stored email address in admin/users.php.

MEDIUM 5.4EPSS 7.17%

Does this matter?

Lower severity and a low EPSS score (7.17%). Track it; it rarely justifies an emergency change on its own.

Description

Nagios XI 5.5.6 allows persistent cross site scripting from remote authenticated attackers via the stored email address in admin/users.php.

CVSS 3.0
5.4 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS
7.17% probability · 94th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-79
Affected
nagios/nagios xi
Source
vulnreport@tenable.com
EPSS trend
0%5%10%21 September 2026: 5.53%22 September 2026: 7.17%27 October 2026: 7.17%21 September 202627 October 2026

EPSS moved from 5.5% on 21 September 2026 to 7.2% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.