Buffer overflow in parallel HNSW index build in pgvector 0.6.0 through 0.8.1 allows a database user to leak sensitive data from other relations or crash the database server.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Buffer overflow in parallel HNSW index build in pgvector 0.6.0 through 0.8.1 allows a database user to
    leak sensitive data from other relations or crash the database server. (CVE-2026-3172)

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:1068-1 advisory.

    This update for pgvector fixes the following issue:

    Update to pgvector 0.8.2:

    - CVE-2026-3172: Buffer overflow in parallel HNSW index build (bsc#1258945).

    Changelog:

     * Fixed Index Searches in EXPLAIN output for Postgres 18

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Buffer overflow in parallel HNSW index build in pgvector 0.6.0 through 0.8.1 allows a database user to     leak sensitive data from other relations or crash the database server. (CVE-2026-3172)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
464945	Echo: pgvector: security update to 0.8.2	Tenable Cloud Security	Echo Local Security Checks	Local	high
464945	Echo: pgvector: security update to 0.8.2	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
303941	SUSE SLES15 / openSUSE 15 Security Update : pgvector (SUSE-SU-2026:1068-1)	Nessus	SuSE Local Security Checks	Local	high
300149	Linux Distros Unpatched Vulnerability : CVE-2026-3172	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-3172

high

Tenable Plugins

high

high

high

high