Linuxfabrik monitoring-plugins up to 4.1.x SQLite Database db_sqlite.py lib.db_sqlite.get_db_path symlink

Summaryinfo

A vulnerability classified as very critical has been found in Linuxfabrik monitoring-plugins up to 4.1.x. The affected element is the function lib.db_sqlite.get_db_path of the file db_sqlite.py of the component SQLite Database. Performing a manipulation results in symlink. This vulnerability was named CVE-2026-53759. The attack needs to be approached locally. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical has been found in Linuxfabrik monitoring-plugins up to 4.1.x. This affects the function lib.db_sqlite.get_db_path of the file db_sqlite.py of the component SQLite Database. The manipulation with an unknown input leads to a symlink vulnerability. CWE is classifying the issue as CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations. Prior to version 4.2.0, db_sqlite.py created SQLite databases at predictable paths in the shared /tmp directory and followed attacker-created symbolic links at those paths. An attacker who controls a local monitoring account can create a symlink such as /tmp/linuxfabrik-monitoring-plugins-docker-stats.db and then trigger a sudo-authorized plugin, causing the root process to create or modify the symlink target. The primitive can overwrite arbitrary paths, cause denial of service, or manipulate an existing SQLite database through a crafted rollback journal or write-ahead log. The Monitoring Plugins integration also moved plugin caches through lib.db_sqlite.get_db_path() so they use the secured per-user directory. This issue is fixed in version 4.2.0.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-53759 since 06/10/2026. The exploitability is told to be easy. An attack has to be approached locally. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/23/2026).

Upgrading to version 4.2.0 eliminates this vulnerability.

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Productinfo

Vendor

• Linuxfabrik

Name

• monitoring-plugins

Version

• 4.0
• 4.1

Website

• Product: https://github.com/Linuxfabrik/monitoring-plugins/

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