Vulnerability-Lookup

CVE-2026-3172 (GCVE-0-2026-3172)

Vulnerability from cvelistv5 – Published: 2026-02-25 20:59 – Updated: 2026-02-26 15:04

Title

pgvector buffer overflow in parallel HNSW index build

Summary

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.

Severity

8.1 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-26 15:03 UTC

CWE

CWE-191 - Integer Underflow or Wraparound
CWE-787 - Out-of-bounds Write

Assigner

PostgreSQL redhat root Scorecard

References

1 reference

URL	Tags
https://github.com/pgvector/pgvector/issues/959

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	pgvector	Affected: 0.8.0 , < 0.8.2 (semver) Affected: 0.7.0 (semver) Affected: 0.6.0 (semver)

Credits

Thanks to chungkn from OneMount Group for reporting this.

Show details on NVD website

JSON

To clipboard

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CERTFR-2026-AVI-0216

Vulnerability from certfr_avis - Published: 2026-02-26 - Updated: 2026-02-26

Une vulnérabilité a été découverte dans PostgreSQL. Elle permet à un attaquant de provoquer un déni de service à distance et une atteinte à la confidentialité des données.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	PostgreSQL	pgvector	pgvector versions antérieures à 0.8.2

References

Title

Publication Time

FKIE_CVE-2026-3172

Vulnerability from fkie_nvd - Published: 2026-02-25 21:16 - Updated: 2026-06-17 10:43

Severity

8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Summary

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.

References

	URL	Tags
	f86ef6dc-4d3a-42ad-8f28-e6d5547a5007	https://github.com/pgvector/pgvector/issues/959

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "defaultStatus": "unaffected",
          "product": "pgvector",
          "vendor": "n/a",
          "versions": [
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GHSA-789C-MGQF-5HWX

Vulnerability from github – Published: 2026-02-25 21:31 – Updated: 2026-02-25 21:31

Details

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.

Severity

8.1 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Show details on source website

JSON

To clipboard

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  "aliases": [
    "CVE-2026-3172"
  ],
  "database_specific": {
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  "modified": "2026-02-25T21:31:19Z",
  "published": "2026-02-25T21:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3172"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pgvector/pgvector/issues/959"
    }
  ],
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      "type": "CVSS_V3"
    }
  ]
}

OPENSUSE-SU-2026:10409-1

Vulnerability from csaf_opensuse - Published: 2026-03-23 00:00 - Updated: 2026-09-17 16:58

Summary

pgvector-devel-0.8.2-1.1 on GA media

Severity

Moderate

Scope

1 vulnerability in this advisory, including CVE-2026-3172.

CVE-2026-3172

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Recommended: 4 products

Open the full advisory

OPENSUSE-SU-2026:20489-1

Vulnerability from csaf_opensuse - Published: 2026-04-09 12:27 - Updated: 2026-09-17 17:29

Summary

Security update for pgvector

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-3172.

CVE-2026-3172

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Recommended: 28 products

Open the full advisory

SUSE-SU-2026:1068-1

Vulnerability from csaf_suse - Published: 2026-03-26 10:39 - Updated: 2026-03-26 10:39

Summary

Security update for pgvector

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-3172.

CVE-2026-3172

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Recommended: 68 products

Open the full advisory

SUSE-SU-2026:21153-1

Vulnerability from csaf_suse - Published: 2026-04-09 12:14 - Updated: 2026-09-16 19:40

Summary

Security update for pgvector

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-3172.

CVE-2026-3172

8.1 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Recommended: 56 products

Open the full advisory

UBUNTU-CVE-2026-3172 (CVE-2026-3172)

Vulnerability from osv_ubuntu – Published: 2026-02-25 21:16 – Updated: 2026-05-20 15:24 – Source website

Details

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.

Severity

8.1 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-3172	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-3172	REPORT
	https://github.com/pgvector/pgvector/issues/959	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "postgresql-16-pgvector",
            "binary_version": "0.6.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "pgvector",
        "purl": "pkg:deb/ubuntu/pgvector@0.6.0-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.4-1",
        "0.5.1-1",
        "0.6.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "postgresql-17-pgvector",
            "binary_version": "0.8.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "pgvector",
        "purl": "pkg:deb/ubuntu/pgvector@0.8.0-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "postgresql-18-pgvector",
            "binary_version": "0.8.1-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "pgvector",
        "purl": "pkg:deb/ubuntu/pgvector@0.8.1-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.0-1",
        "0.8.1-2"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2026-3172",
  "modified": "2026-05-20T15:24:29Z",
  "published": "2026-02-25T21:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-3172"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-3172"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/pgvector/pgvector/issues/959"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-3172"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-3172 (GCVE-0-2026-3172)

CERTFR-2026-AVI-0216

Solutions

FKIE_CVE-2026-3172

GHSA-789C-MGQF-5HWX

OPENSUSE-SU-2026:10409-1

OPENSUSE-SU-2026:20489-1

SUSE-SU-2026:1068-1

SUSE-SU-2026:21153-1

UBUNTU-CVE-2026-3172 (CVE-2026-3172)

Tags

Sightings

Nomenclature

Related by attack behaviour