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Vulnerability · Published Aug 18, 2026 · Assigned by GitHub_M

CVE-2026-53759linuxfabrik-lib: Insecure creation of SQLite databases

Low 2.0

In plain English

A low-severity security flaw in monitoring-plugins from Linuxfabrik. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)2.0Low
Exploit odds (30 days)0.2%top 91.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

EcosystemPackageFixed inAdvisory
PyPIlinuxfabrik-lib4.2.0GHSA-r35r-fpx2-jgr4
PyPIlinuxfabrik-lib4.2.0PYSEC-2026-2596

Affected products (as reported)

VendorProductVersions
Linuxfabrik monitoring-plugins < 4.2.0

Weakness: CWE-377 · Vector: 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

References