CVE-2020-36857: Nagios XI < 5.6.14 Authenticated SQL Injection via SNMP Trap Interface Page

Vulnerability summary

CVE-2020-36857 is a high (CVSS 8.6) SQL Injection vulnerability in nagios nagios_xi. EPSS estimates a 2.27% chance of exploitation in the next 30 days, higher than 82.9% of scored vulnerabilities.

Timeline

1. 30-10-2025
   PublishedVulnerability first disclosed.
2. 24-11-2025
   Last modifiedVulnerability information updated.

Description

Nagios XI versions prior to 5.6.14 contain a post-authentication SQL injection vulnerability in the SNMP Trap Interface page. Exploitation requires an account with administrative privileges to access the affected interface. A user with administrative access could supply crafted input that is not properly sanitized, allowing SQL injection that may lead to unauthorized disclosure or modification of application data or execution of arbitrary SQL commands against the backend database.

• CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.