Nagios Log Server < 2026R1.0.1 Local Privilege Escalation via Writable Scripts and Sudo Rules

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/nagioslogserver/scripts', while several scripts in this directory are owned by root and may be executed via sudo without a password. A local attacker running as 'www-data' can move one of these root-owned scripts to a backup name and create a replacement script with attacker-controlled content at the original path, then invoke it with sudo. This allows arbitrary commands to be executed with root privileges, providing full compromise of the underlying operating system.

Nagios Log Server < 2026R1.0.1 Authenticated Command Injection via Natural Language Queries

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—are read from the global configuration and concatenated into a shell command that is executed via shell_exec() without proper input handling or command-line argument sanitation. An authenticated user with access to the 'Global Settings' page can supply crafted values in these fields to inject additional shell commands, resulting in arbitrary command execution as the 'www-data' user and compromise of the Log Server host.

Nagios Log Server < 2024R1.3.2 Set Email Privilege Escalation

Nagios Log Server versions prior to 2024R1.3.2 contain a privilege escalation vulnerability in the account email-change workflow. A user could set their own email to an invalid value and, due to insufficient validation and authorization checks tied to email identity state, trigger inconsistent account state that granted elevated privileges or bypassed intended access controls.

Nagios Log Server < 2024R1.3.1 RCE via Malformed Dashboard ID

Nagios Log Server versions prior to 2024R1.3.1 contain a code injection vulnerability where malformed dashboard ID values are not properly validated before being forwarded to an internal API. An attacker able to supply crafted dashboard ID values can cause the system to execute attacker-controlled data, leading to arbitrary code execution in the context of the Log Server process.

Nagios Log Server < 2024R2.0.3 Logstash Process Root Privileges

Nagios Log Server versions prior to 2024R2.0.3 contain an execution with unnecessary privileges vulnerability as it runs its embedded Logstash process as the root user. If an attacker is able to compromise the Logstash process - for example by exploiting an insecure plugin, pipeline configuration injection, or a vulnerability in input parsing - the attacker could execute code with root privileges, resulting in full system compromise. The Logstash service has been altered to run as the lower-privileged 'nagios' user to reduce this risk associated with a network-facing service that can accept untrusted input or load third-party components.

Nagios Log Server < 2024R2.0.3 Non-Admin Dashboard Deletion

Nagios Log Server versions prior to 2024R2.0.3 contain an incorrect authorization vulnerability that allows non-administrator users to delete global dashboards. The application did not correctly enforce authorization checks for the global dashboard deletion workflow, enabling lower-privileged users to remove dashboards that affect other users or the overall monitoring UI.

Nagios Log Server < 2024R2.0.3 Non-Empty Default Dashboard Fallback

In Nagios Log Server versions prior to 2024R2.0.3, when a user's configured default dashboard is deleted, the application does not reliably fall back to an empty, default dashboard. In some implementations this can result in an unexpected dashboard being presented as the user's default view. Depending on the product's dashboard sharing and access policies, this behavior may cause information exposure or unexpected privilege exposure.

Nagios Log Server < 2024R2.0.2 Cluster Manager Credential Requests Sent Over Plaintext

Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the cluster manager component when requesting sensitive credentials from peer nodes over an unencrypted channel even when SSL/TLS is enabled in the product configuration. As a result, an attacker positioned on the network path can intercept credentials in transit. Captured credentials could allow the attacker to authenticate as a cluster node or service account, enabling further unauthorized access, lateral movement, or system compromise.

Nagios Log Server < 2024R2.0.2 AD/LDAP Import Password Not Obfuscated

Nagios Log Server versions prior to 2024R2.0.2 contain a vulnerability in the AD/LDAP user import functionality as it fails to obfuscate the password field during import. As a result, the plaintext password supplied for imported accounts may be exposed in the user interface, logs, or other diagnostic output. This can leak sensitive credentials to administrators or anyone with access to import results.

Nagios Log Server < 2024R1.0.2 LPE from Apache/Backend Shell User to Root

Nagios Log Server versions prior to 2024R1.0.2 contain a local privilege escalation vulnerability that allows an attacker who could execute commands as the Apache web user (or the backend shell user) to escalate to root on the host.

Nagios Log Server < 2024R1 XSS via Create User Function

Nagios Log Server versions prior to 2024R1 are vulnerable to cross-site scripting (XSS) via the Create User function. 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.

Nagios Log Server < 2024R1 Incorrect Authorization Granting Full API Access

Nagios Log Server versions prior to 2024R1 contain an incorrect authorization vulnerability. Users who lacked the required API permission were nevertheless able to invoke API endpoints, resulting in unintended access to data and actions exposed via the API. This incorrect authorization check could allow authenticated but non-privileged users to read or modify resources beyond their intended rights.

Nagios Log Server < 2.1.14 XSS via Snapshots Page

Nagios Log Server versions prior to 2.1.14 are vulnerable to cross-site scripting (XSS) via the Snapshots Page. Untrusted log content was not safely encoded for the output context, allowing attacker-controlled data present in logs to execute script in the victim’s browser within the application origin.

Nagios Log Server < 2.1.6 XSS via Create User, Edit User, & Manage Host Lists Pages

Nagios Log Server versions prior to 2.1.6 contain cross-site scripting (XSS) vulnerabilities via the web interface on the Create User, Edit User, and Manage Host Lists pages. 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.

Nagios Log Server < 1.4.2 Dashboards Logs Table XSS

Nagios Log Server versions prior to 1.4.2 are vulnerable to cross-site scripting (XSS) in the Dashboards section when rendering log entries in the Logs table. Untrusted log content was not safely encoded for the output context, allowing attacker-controlled data present in logs to execute script in the victim’s browser within the application origin.

This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as it is a duplicate of CVE-2023-7323.

Nagios Log Server before 2024R1.3.2 allows authenticated users to retrieve cleartext administrative API keys via a /nagioslogserver/index.php/api/system/get_users call. This is GL:NLS#475.

Nagios Log Server before 2024R1.3.2 allows authenticated users (with read-only API access) to stop the Elasticsearch service via a /nagioslogserver/index.php/api/system/stop?subsystem=elasticsearch call. The service stops even though "message": "Could not stop elasticsearch" is in the API response. This is GL:NLS#474.

Cross Site Scripting vulnerability in Nagios Log Server v.2024R1.3.1 allows a remote attacker to execute arbitrary code via a payload into the Email field.

Nagios Log Server before 2.1.9 contains Stored XSS in the custom column view for the alert history and audit log function through the affected pp parameter. This affects users who open a crafted link or third-party web page.