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TI-2020-18996 Aliases CVE-2020-36861GHSA-p5jq-6372-24j5

Nagios XI < 5.7.5 Core Config Manager (CCM) XSS via Overlay Rendering and Notification/Check Period Pages

Priority LOW 24CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The Core Config Manager (CCM) in Nagios XI versions prior to CCM 3.0.8 / Nagios XI 5.7.5 contains multiple cross-site scripting (XSS) vulnerabilities in the overlay UI elements and the Notification/Check Period pages. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0042 36th percentileScored 2026-11-07
Fix Fixed XI (Nagios): 5.7.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NagiosXIbefore 5.7.55.7.5Patch availableCNA
  • XI VendorNagios Affected before 5.7.5 Fixed in 5.7.5 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:*before 5.7.5VulnerableNagios
  • cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:* Versions before 5.7.5 Vulnerable ·Nagios

Remediation

  • Fix · CNA XI (Nagios) Fixed in 5.7.5

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Nagios XI 5.7.5

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2020-19004 Nagios XI < 5.7.5 SQL injection via SNMP Trap Interface Edit PagePriority MEDIUM 44
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-36861
  2. 2026-10-03 Alias added: GHSA-p5jq-6372-24j5

References

Patch 1

  • TI-2021-07545 Nagios XI version xi-5.7.5 is affected by OS command injection. KEVCVSS 3.1HIGH 8.8
  • TI-2021-07544 Nagios XI version xi-5.7.5 is affected by OS command injection. KEVCVSS 3.1HIGH 8.8
  • TI-2021-07543 Nagios XI version xi-5.7.5 is affected by OS command injection. KEVCVSS 3.1HIGH 8.8
  • TI-2019-11993 Nagios XI before 5.6.6 allows remote command execution as root. KEVCVSS 3.1HIGH 8.8
  • TI-2023-26027 Nagios XI before version 5.11.3 was discovered to contain a remote code execution (RCE)… CVSS 3.1CRITICAL 9.8
  • TI-2018-11196 Snoopy 1.0 in Nagios XI 5.5.6 allows remote unauthenticated attackers to execute… CVSS 3.0CRITICAL 9.8
See all 191 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences