Vulnerability · Published Mar 6, 2026 · Assigned by GitHub_M

CVE-2026-29089TimescaleDB uses untrusted search path during extension upgrade

High 8.8

In plain English

A high-severity security flaw in timescaledb from timescale. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.2%top 95.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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 search_path setting to locate unqualified database objects (tables, functions, operators). If the search_path 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 products (as reported)

Vendor	Product	Versions
timescale	timescaledb	>= 2.23.0, < 2.25.2

Weakness: CWE-426 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

https://github.com/timescale/timescaledb/security/advisories/GHSA-vgp2-jj5c-828m x_refsource_CONFIRM
https://github.com/timescale/timescaledb/pull/9331 x_refsource_MISC
https://github.com/timescale/timescaledb/commit/9a8f7f8bdeb99e6abae0786ffe526791a8628ce3 x_refsource_MISC
https://github.com/timescale/timescaledb/releases/tag/2.25.2 x_refsource_MISC