Is CVE-2026-116489 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-116489 being exploited in the wild.

How severe is CVE-2026-116489?

High severity, with a CVSS score of 7.5, published 26 October 2026.

Which products and versions are affected?

Timescale Pgvectorscale before 0.9.1.

Is there a fix for CVE-2026-116489?

Yes: fixed in 0.9.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-116489 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-116489?

Check whether you run Timescale Pgvectorscale at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-116489: Timescale pgvectorscale type confusion in DiskANN indexing

CVE-2026-116489 · Severity: high · CVSS 7.5 · Published 2026-10-26

pgvectorscale is a PostgreSQL extension for vector search and indexing. A type confusion vulnerability allows database users with CREATE privileges to corrupt memory, crash the server, or escalate privileges by constructing malicious vector data and DiskANN indexes.

Vendors: Timescale.

Quick answers

Is CVE-2026-116489 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-116489 being exploited in the wild.
How severe is CVE-2026-116489?: High severity, with a CVSS score of 7.5, published 26 October 2026.
Which products and versions are affected?: Timescale Pgvectorscale before 0.9.1.
Is there a fix for CVE-2026-116489?: Yes: fixed in 0.9.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-116489 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-116489?: Check whether you run Timescale Pgvectorscale at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 0.9.1

Technical details

A type confusion vulnerability in pgvectorscale before 0.9.1 allows low-privileged database users with CREATE privilege on the vectorscale schema to shadow pgvector's vector type or operators. Attackers can pre-create shadow objects and build or query DiskANN indexes over crafted values, causing out-of-bounds reads and writes that lead to memory disclosure, server crashes, or privilege escalation.

Affected products

Timescale pgvectorscale before 0.9.1

Timeline

2026-10-26: disclosed

References

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