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Vulnerability record · CVE-2021-26024 · published 3 February 2021

CVE-2021-26024: Nagios favorites insecure direct object reference vulnerability

Nagios · Favorites

The Favorites component before 1.0.2 for Nagios XI 5.8.0 is vulnerable to Insecure Direct Object Reference: it is possible to create favorites for any other user account.

5.3 CVSS 3.1 Medium EPSS 19% · top 2.8% CWE-639 · Insecure direct object reference
5.3CVSS 3.1 base score, v2 5.0
19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

The Favorites component before 1.0.2 for Nagios XI 5.8.0 is vulnerable to Insecure Direct Object Reference: it is possible to create favorites for any other user account.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.nagios.com/products/security/ Vendor Advisory
https://www.nagios.com/products/security/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

6.1CVE-2021-26023Nagios favorites cross-site scripting vulnerabilityThe Favorites component before 1.0.2 for Nagios XI 5.8.0 is vulnerable to XSS.EPSS 25%8.4CVE-2026-55255Langflow IDOR in responses endpoint allows cross-user flow executionLangflow before 1.9.1 has an insecure direct object reference in the /api/v1/responses endpoint. An authenticated attacker can supply another user's …KEVEPSS 0.89%analysed

Source: NIST National Vulnerability Database (record CVE-2021-26024), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.