How severe is CVE-2026-29089?

CVE-2026-29089 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-29089 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-29089?

CVE-2026-29089 affects Timescale Timescaledb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29089?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-29089 have an EU (EUVD) identifier?

Yes. CVE-2026-29089 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10048.

When was CVE-2026-29089 published?

CVE-2026-29089 was published on 2026-03-06 and last updated on 2026-06-17.

CVE-2026-29089

CVE-2026-29089 is a high-severity vulnerability in Timescale Timescaledb with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-426.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10048
Weakness: CWE-426
Affected product: Timescale Timescaledb
Published: 2026-03-06
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-29089?: 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.
How severe is CVE-2026-29089?: CVE-2026-29089 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-29089 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-29089?: CVE-2026-29089 affects Timescale Timescaledb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29089?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-29089 have an EU (EUVD) identifier?: Yes. CVE-2026-29089 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10048.
When was CVE-2026-29089 published?: CVE-2026-29089 was published on 2026-03-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:timescale:timescaledb:*:*:*:*:*:*:*:*

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