CVE-2026-3172— pgvector buffer overflow in parallel HNSW index build
Quick assessment
Affected
n/a pgvector
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
pgvector是pgvector开源的一个Postgres的向量相似度搜索。 pgvector 0.6.0版本至0.8.1版本存在安全漏洞，该漏洞源于并行HNSW索引构建存在缓冲区溢出，可能导致数据泄露或数据库服务器崩溃。
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I. Basic Information for CVE-2026-3172
Vulnerability Information
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Vulnerability Title
pgvector buffer overflow in parallel HNSW index build
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数下溢(超界折返)
Source: CVE Program / CVE List V5
Vulnerability Title
pgvector 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
pgvector是pgvector开源的一个Postgres的向量相似度搜索。 pgvector 0.6.0版本至0.8.1版本存在安全漏洞，该漏洞源于并行HNSW索引构建存在缓冲区溢出，可能导致数据泄露或数据库服务器崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | pgvector | 0.8.0 ~ 0.8.2 | - |
|
II. Public POCs for CVE-2026-3172
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · n/a · 2026-02-25 · 6 CVEs total
| CVE-2026-3147 | 5.3 MEDIUM | libvips csvload.c vips_foreign_load_csv_build heap-based overflow |
| CVE-2026-3145 | 5.3 MEDIUM | libvips matrixload.c vips_foreign_load_matrix_header memory corruption |
| CVE-2026-3146 | 3.3 LOW | libvips matrixload.c vips_foreign_load_matrix_header null pointer dereference |
| CVE-2025-69771 | asbplayer 安全漏洞 | |
| CVE-2026-26717 | Richie 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-3172
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