# CVE-2026-53759

## Summary

- **CVE ID:** CVE-2026-53759
- **Severity:** LOW
- **CVSS Score:** 2 (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-377
- **Published:** Aug 18, 2026
- **Last Modified:** Aug 21, 2026

## Description

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.

## Affected Products

- Linuxfabrik — monitoring-plugins (< 4.2.0)

## References

- [CNA](https://github.com/Linuxfabrik/monitoring-plugins/security/advisories/GHSA-r35r-fpx2-jgr4)
- [CNA](https://github.com/Linuxfabrik/lib/commit/1e3ca61d45e37ef118aa0c107b420ef74458697e)
- [CNA](https://github.com/Linuxfabrik/lib/blob/main/CHANGELOG.md#v420---2026-06-02)
- [CNA](https://github.com/Linuxfabrik/lib/releases/tag/v4.2.0)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 8.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._