CVE-2026-29089: TimescaleDB uses untrusted search path during extension upgrade
TimescaleDB is a time-series database for high-performance real-time analytics packaged as a Postgres extension. From version 2.23.0 to 2.25.1, PostgreSQL uses the searchpath setting to locate unqualified database objects (tables, functions, operators). If the searchpath includes user-writable schemas a malicious user can create functions in that schema that shadow builtin postgres functions and will be called instead of the postgres functions leading to arbitrary code execution during extension upgrade. This issue has been patched in version 2.25.2.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2026-29089?
CVE-2026-29089 is considered a medium-severity vulnerability affecting TimescaleDB versions 2.23.0 to 2.25.1.
How can I fix CVE-2026-29089?
To fix CVE-2026-29089, upgrade TimescaleDB to a version later than 2.25.1 where the search path issue is resolved.
What versions are affected by CVE-2026-29089?
CVE-2026-29089 affects TimescaleDB versions from 2.23.0 to 2.25.1.
What is the main issue described in CVE-2026-29089?
The main issue in CVE-2026-29089 is the use of an untrusted search path during TimescaleDB extension upgrades, potentially leading to the execution of untrusted code.
Is CVE-2026-29089 specific to TimescaleDB?
Yes, CVE-2026-29089 specifically affects the TimescaleDB extension used with PostgreSQL.