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CVE-2026-116489 Details

Description

Timescale pgvectorscale before 0.9.1 contains a type confusion vulnerability that allows low-privileged database users to corrupt memory by shadowing pgvector's vector type or operators. Attackers with CREATE privilege on the vectorscale schema can pre-create shadow objects, then build and query DiskANN indexes over crafted values to cause out-of-bounds reads and writes, disclosing memory, crashing the server, or escalating privileges.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/timescale/pgvectorscale	[email protected]
https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/build.rs#L253	[email protected]
https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/mod.rs#L208-L231	[email protected]
https://github.com/timescale/pgvectorscale/blob/0.9.0/pgvectorscale/src/access_method/pg_vector.rs#L133-L151	[email protected]
https://github.com/timescale/pgvectorscale/commit/1c7cb1cab919ac122f901f163a71f69a264a8f81	[email protected]
https://github.com/timescale/pgvectorscale/commit/59d2f573dbd7a1446728ac547576d22f5b05cfaa	[email protected]
https://github.com/timescale/pgvectorscale/commit/f42f8cf29c92111add863ccf3255b3bf23fb51cd	[email protected]
https://github.com/timescale/pgvectorscale/pull/280	[email protected]
https://github.com/timescale/pgvectorscale/releases/tag/0.9.1	[email protected]
https://www.vulncheck.com/advisories/timescale-pgvectorscale-before-0.9.1-type-confusion-via-unqualified-diskann-operator-classes	[email protected]

see all 10 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-843	Access of Resource Using Incompatible Type ('Type Confusion')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Nov 4, 2026	CVE Modified	CISA-ADP
Oct 26, 2026	New CVE Received	[email protected]