What’s Vulnerable › Vulnerabilities

CVE-2021-26023

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 25.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-03 · updated 2026-06-17
• Weakness: CWE-79

Description

The Favorites component before 1.0.2 for Nagios XI 5.8.0 is vulnerable to XSS.

Affected products

• Nagios Favorites: before 1.0.2 — fixed in 1.0.2

How to fix

Upgrade to a fixed version: Nagios Favorites 1.0.2. Check the vendor advisory for mitigations.

References

• https://www.nagios.com/products/security/
• https://www.nagios.com/products/security/

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