An issue was discovered in Nagios XI before 5.9.3. The is_insecure_login_authenticated function uses a insecure timing comparison that leads to an attacker being able to bruteforce the admin password, by measuring timing differences in the comparison.
Vendor
nagios vulnerabilities
301 published CVES affecting nagios, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 301
- Critical
- 48
- High
- 103
- Medium
- 145
- Low
- 5
- Unscored
- 0
- CISA KEV
- 4
Products
- nagios xi 192
- XI 78
- nagios 37
- Log Server 23
- Fusion 19
- Network Analyzer 7
- nagios core 5
- plugins 4
- Host 3
- incident manager 3
- remote plug in executor 3
- favorites 2
- nagios cross platform agent 2
- business process intelligence 1
- nagios network analyzer 1
- nagios xi docker wizard 1
- nagios xi switch wizard 1
- nagios xi watchguard wizard 1
- NCPA 1
- ndoutils 1
Latest nagios CVEs
Newest publication first · page 1 of 13
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LowCVSS 3.5 EPSS 0.73%
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LowCVSS 3.1 EPSS 1.3%
An issue was discovered in twilio_ajax_handler.php in Nagios XI before 5.9.3. An attacker can force a user to visit a malicious site by using a open redirect vulnerability.
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HighCVSS 8.8 EPSS 75.6%
Nagios Host zabbixagent_configwizard_func Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Nagios Host. Authentication is required to exploit this vulnerability. The specific f...
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HighCVSS 8.8 EPSS 75.4%
Nagios Host esensors_websensor_configwizard_func Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Nagios Host. Authentication is required to exploit this vulnerability. The spe...
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CVE-2026-2042 Nagios Host monitoringwizard Command Injection Remote Code Execution Vulnerability
PublishedHighCVSS 8.8 EPSS 6.1%Nagios Host monitoringwizard Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Nagios Host. Authentication is required to exploit this vulnerability. The specific flaw exists wi...
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HighCVSS 7.5 EPSS 2.0%
NagiosXI 2026R1.0.1 build 1762361101 is vulnerable to Directory Traversal in /admin/coreconfigsnapshots.php.
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HighCVSS 8.8 EPSS 1.1%
In NagiosXI 2026R1.0.1 build 1762361101, Dashboard parameters lack proper filtering, allowing any authenticated user to exploit a SQL Injection vulnerability.
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HighCVSS 8.6 EPSS 1.9%
Nagios XI versions prior to 2026R1.1 are vulnerable to local privilege escalation due to an unsafe interaction between sudo permissions and application file permissions. A user‑accessible maintenance script may be executed as root via sudo and includes an application file that is...
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HighCVSS 8.5 EPSS 0.35%
Nagios Log Server versions prior to 2026R1.0.1 are vulnerable to local privilege escalation due to a combination of sudo misconfiguration and group-writable application directories. The 'www-data' user is a member of the 'nagios' group, which has write access to '/usr/local/nagio...
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HighCVSS 8.6 EPSS 9.2%
Nagios Log Server versions prior to 2026R1.0.1 contain an authenticated command injection vulnerability in the experimental 'Natural Language Queries' feature. When this feature is configured, certain user-controlled settings—including model selection and connection parameters—ar...
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MediumCVSS 5.1 EPSS 0.44%
Nagios XI versions prior to 5.8.7 using embedded Nagios Core are vulnerable to cross-site scripting (XSS) via the Core UI’s Views URL handling (escape_string()). Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary scrip...
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CriticalCVSS 9.4 EPSS 1.2%
Nagios XI versions prior to 2024R1.1.3 contain a privilege escalation vulnerability in which an authenticated administrator could leverage the Migrate Server feature to obtain root privileges on the underlying XI host. By abusing the migration workflow, an admin-level attacker co...
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MediumCVSS 6.0 EPSS 1.0%
Nagios XI versions prior to 2024R1.1.3, under certain circumstances, disclose sensitive user account information (including API keys and hashed passwords) to authenticated users who should not have access to that data. Exposure of API keys or password hashes could lead to account...
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MediumCVSS 5.1 EPSS 0.59%
Nagios XI versions prior to < 2024R1.1 is vulnerable to a cross-site scripting (XSS) when a user visits the "missing page" (404) page after following a link from another website. The vulnerable component, page-missing.php, fails to properly validate or escape user-supplied input,...
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MediumCVSS 5.1 EPSS 0.61%
Nagios XI versions prior to 2011R1.9 are vulnerable to cross-site scripting (XSS) via the handling of xiwindow variables used to build permalinks in the web interface. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary...
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MediumCVSS 5.1 EPSS 0.45%
Nagios XI versions prior to 5.8.0 are vulnerable to cross-site scripting (XSS) via the Views feature URL handling. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.
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MediumCVSS 5.1 EPSS 0.42%
Nagios XI versions prior to 5.4.13 are vulnerable to cross-site scripting (XSS) via the Views page of the web interface. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.
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MediumCVSS 5.1 EPSS 0.42%
Nagios XI versions prior to 2012R2.6 are vulnerable to cross-site scripting (XSS) via the Tools Menu of the web interface. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.
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MediumCVSS 5.1 EPSS 0.44%
Nagios XI versions prior to 2011R1.9 are vulnerable to cross-site scripting (XSS) via the link-handling functions used by status and report pages. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the contex...
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MediumCVSS 5.1 EPSS 0.42%
Nagios XI versions prior to 5.2.4 are vulnerable to cross-site scripting (XSS) via the Reports interface through values from the startdate and enddate fields. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script i...
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MediumCVSS 5.1 EPSS 0.47%
Nagios XI versions prior to 2011R1.9 are vulnerable to cross-site scripting (XSS) via the recurring downtime script of the web interface. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a vi...
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MediumCVSS 5.1 EPSS 0.45%
Nagios XI versions prior to 5.8.0 are vulnerable to stored cross-site scripting (XSS) via the My Tools page. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.
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MediumCVSS 5.1 EPSS 0.45%
Nagios XI versions prior to 5.2.4 are vulnerable to cross-site scripting (XSS) via the “My Reports” listing of the web interface. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's b...
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MediumCVSS 5.1 EPSS 0.45%
Nagios XI versions prior to 5.2.4 are vulnerable to cross-site scripting (XSS) via the Menu System of the web interface. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.
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MediumCVSS 5.1 EPSS 0.42%
Nagios XI versions prior to 5.7.3 are vulnerable to cross-site scripting (XSS) via the Manage Users page of the Admin interface. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's br...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.