Post-Authentication SQL Injection in Nagios XI by Nagios
CVE-2020-36857

8.6HIGH

Key Information:

Vendor

NagiOS

Status
Xi
Vendor
CVE Published:
30 October 2025

What is CVE-2020-36857?

Nagios XI versions before 5.6.14 contain a post-authentication SQL injection vulnerability specifically within the SNMP Trap Interface page. Attackers with administrative privileges can exploit this flaw by submitting crafted input that circumvents proper sanitization processes, potentially leading to unauthorized access, disclosure, or modification of sensitive application data. Such exploitation may also allow attackers to execute arbitrary SQL commands on the backend database, posing significant security risks.

Affected Version(s)

XI 0 < 5.6.14

References

https://www.nagios.com/products/security/#nagios-xi
vendor-advisorypatch
https://www.nagios.com/changelog/nagios-xi/
release-notespatch
https://www.vulncheck.com/advisories/nagios-xi-authentica...
third-party-advisory

CVSS V4

Score:
8.6
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

IBM X-Force Exchange
.