Cross-Site Scripting Vulnerability in Nagios Log Server
CVE-2020-36858

5.1MEDIUM

Key Information:

Vendor

NagiOS

Status
Log Server
Vendor
CVE Published:
30 October 2025

What is CVE-2020-36858?

Nagios Log Server versions earlier than 2.1.6 are susceptible to cross-site scripting vulnerabilities through their web interface. These flaws occur on the Create User, Edit User, and Manage Host Lists pages due to insufficient input validation or escaping of user-supplied data. This allows an attacker to inject and potentially execute arbitrary scripts in the context of a victim’s browser, which can lead to unauthorized access or data manipulation.

Affected Version(s)

Log Server 0 < 2.1.6

References

https://www.nagios.com/changelog/nagios-log-server-2024r1/
release-notespatch
https://www.vulncheck.com/advisories/nagios-log-server-xs...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2020-36858 : Cross-Site Scripting Vulnerability in Nagios Log Server