CVE-2026-3172

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.

Database specific

{
    "cwe_ids": [
        "CWE-191",
        "CWE-787"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3172.json",
    "cna_assigner": "PostgreSQL"
}

References

Affected packages

Git / github.com/pgvector/pgvector

Affected ranges

Type

GIT

Repo

https://github.com/pgvector/pgvector

Events

Introduced

2627c5ff775ae6d7aef0c430121ccf857842d2f2

Fixed

cab9da72c04353f143bb06b42ab70a403daac64a

Introduced

3849f0fd3d6f7916de26d43e3a3c9f8e6615bc8f

Last affected

281d4fcf60e2f037fa09d62be2543bb4d7511f2b

Database specific

{
    "extracted_events": [
        {
            "introduced": "0.8.0"
        },
        {
            "fixed": "0.8.2"
        },
        {
            "introduced": "0.7.0"
        },
        {
            "last_affected": "0.7.0"
        },
        {
            "introduced": "0.6.0"
        },
        {
            "last_affected": "0.6.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

0.*

0.6.0

0.7.0

v0.*

v0.8.0

v0.8.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3172.json"