CVE-2026-103484

pgvector buffer overflow in IVFFlat index build

State: Published
Severity: 8.8 High
Published: Oct 1, 2026
Updated: Oct 1, 2026
Reserved: Sep 30, 2026

Description

IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds, which can lead to arbitrary code execution.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	PostgreSQL

Weaknesses

CWE-787 Out-of-bounds Write
CWE-1284 Improper Validation of Specified Quantity in Input

Affected Products

Product	Versions
pgvectorn/a	before 0.8.7Affected

References

https://github.com/pgvector/pgvector/issues/1036
https://github.com/pgvector/pgvector/commit/ee00d39ab30c2a7cf9510abf9288c624d91db156

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