pgvector 0.6.0/0.7.0/0.8.0/0.8.1 integer underflow

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in pgvector 0.6.0/0.7.0/0.8.0/0.8.1. It has been declared as critical. This impacts an unknown function. Such manipulation leads to integer underflow. This vulnerability is documented as CVE-2026-3172. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in pgvector 0.6.0/0.7.0/0.8.0/0.8.1. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a integer underflow vulnerability. Using CWE to declare the problem leads to CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-3172 since 02/24/2026. The exploitation is known to be easy. The attack may be launched remotely. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 300149 (Linux Distros Unpatched Vulnerability : CVE-2026-3172), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.8.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (300149). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.1
CNA Vector (PostgreSQL): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Integer underflow
CWE: CWE-191 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 300149
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-3172

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: pgvector 0.8.2

Timelineinfo

02/24/2026 CVE reserved
02/26/2026 +2 days Advisory disclosed
02/26/2026 +0 days VulDB entry created
03/02/2026 +4 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 959
Status: Confirmed

CVE: CVE-2026-3172 (🔒)
GCVE (CVE): GCVE-0-2026-3172
GCVE (VulDB): GCVE-100-347906

Entryinfo

Created: 02/26/2026 01:33
Updated: 03/02/2026 12:28
Changes: 02/26/2026 01:33 (62), 03/01/2026 06:07 (1), 03/02/2026 12:28 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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