pgvector: pgvector: Arbitrary code execution via out-of-bounds write during IVFFlat index build

cve CVE-2026-103484 3 sources, 3 claims · Watch

Red Hat writes:
pgvector: pgvector: Arbitrary code execution via out-of-bounds write during IVFFlat index build the claim

What it is to other things

In words only, so not counted until a person confirms one:

affectsn_a/pgvector
NVD says “n/a · pgvector”
made_byn_a
NVD says “n/a”

What each source says

PropertySourceSaidMeans here
Cvss
cvss
GitHub advisories8.8
receipt
Source
GitHub advisories
Its words
8.8
Read by
field:cvss.score
Said since
2026-10-02 11:59 UTC
Last answered
2026-10-02 18:02 UTC
Original
open at the source
What the source handed over
{
  "credits": [],
  "cve_id": "CVE-2026-103484",
  "cvss": {
    "score": 8.8,
    "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  },
  "cvss_severities": {
    "cvss_v3": {
      "score": 8.8,
      "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    },
    "cvss_v4": {
      "score": 0.0,
      "vector_string": null
    }
  },
  "cwes": [
    {
      "cwe_id": "CWE-787",
      "name": "Out-of-bounds Write"
    }
  ],
  "description": "IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds, which can lead to arbitrary code execution.",
  "ghsa_id": "GHSA-pw7q-9788-x566",
  "github_reviewed_at": null,
  "html_url": "https://github.com/advisories/GHSA-pw7q-9788-x566",
  "identifiers": [
    {
      "type": "GHSA",
      "value": "GHSA-pw7q-9788-x566"
    },
    {
      "type": "CVE",
      "value": "CVE-2026-103484"
    }
  ],
  "nvd_published_at": "2026-10-01T20:17:23Z",
  "published_at": "2026-10-01T21:32:52Z",
  "references": [
    "https://nvd.nist.gov/vuln/detail/CVE-2026-103484",
    "https://github.com/pgvector/pgvector/issues/1036",
    "https://github.com/pgvector/pgvector/commit/ee00d39ab30c2a7cf9510abf9288c624d91db156",
    "https://github.com/advisories/GHSA-pw7q-9788-x566"
  ],
  "repository_advisory_url": null,
  "severity": "high",
  "source_code_location": "",
  "summary": "IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds,...",
  "type": "unreviewed",
  "updated_at": "2026-10-01T21:33:02Z",
  "url": "https://api.github.com/advisories/GHSA-pw7q-9788-x566",
  "vulnerabilities": [],
  "withdrawn_at": null
}
—
Cvss
cvss
NVD8.8
receipt
Source
NVD
Its words
8.8
Read by
field:cve.metrics.cvssMetricV31[].cvssData.baseScore
Said since
2026-10-02 12:00 UTC
Last answered
2026-10-02 18:04 UTC
Original
open at the source
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "pgvector",
            "vendor": "n/a",
            "versions": [
              {
                "lessThan": "0.8.7",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"
      }
    ],
    "cveTags": [],
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      }
    ],
    "id": "CVE-2026-103484",
    "lastModified": "2026-10-01T20:17:23.213",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          },
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      "ssvcV203": [
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          "ssvcData": {
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            "role": "CISA Coordinator",
            "timestamp": "2026-10-01T19:58:32.132643Z",
            "version": "2.0.3"
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    },
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    "references": [
      {
        "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "url": "https://github.com/pgvector/pgvector/commit/ee00d39ab30c2a7cf9510abf9288c624d91db156"
      },
      {
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        "type": "Secondary"
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  }
}
—
Cvss
cvss
Red Hat8.8
receipt
Source
Red Hat
Its words
8.8
Read by
field:cvss3_score
Said since
2026-10-02 18:04 UTC
Last answered
2026-10-02 18:04 UTC
Original
open at the source
What the source handed over
{
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  "CWE": "CWE-787",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2544842",
  "bugzilla_description": "pgvector: pgvector: Arbitrary code execution via out-of-bounds write during IVFFlat index build",
  "cvss3_score": "8.8",
  "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-10-01T19:49:03Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-103484.json",
  "severity": "important"
}
—
Cwe
cwe
GitHub advisoriesCWE-787
receipt
Source
GitHub advisories
Its words
CWE-787
Read by
field:cwes[].cwe_id
Said since
2026-10-02 11:59 UTC
Last answered
2026-10-02 18:02 UTC
Original
open at the source
What the source handed over
{
  "credits": [],
  "cve_id": "CVE-2026-103484",
  "cvss": {
    "score": 8.8,
    "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
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      "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    },
    "cvss_v4": {
      "score": 0.0,
      "vector_string": null
    }
  },
  "cwes": [
    {
      "cwe_id": "CWE-787",
      "name": "Out-of-bounds Write"
    }
  ],
  "description": "IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds, which can lead to arbitrary code execution.",
  "ghsa_id": "GHSA-pw7q-9788-x566",
  "github_reviewed_at": null,
  "html_url": "https://github.com/advisories/GHSA-pw7q-9788-x566",
  "identifiers": [
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  ],
  "nvd_published_at": "2026-10-01T20:17:23Z",
  "published_at": "2026-10-01T21:32:52Z",
  "references": [
    "https://nvd.nist.gov/vuln/detail/CVE-2026-103484",
    "https://github.com/pgvector/pgvector/issues/1036",
    "https://github.com/pgvector/pgvector/commit/ee00d39ab30c2a7cf9510abf9288c624d91db156",
    "https://github.com/advisories/GHSA-pw7q-9788-x566"
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  "severity": "high",
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  "url": "https://api.github.com/advisories/GHSA-pw7q-9788-x566",
  "vulnerabilities": [],
  "withdrawn_at": null
}
—
Cwe
cwe
Red HatCWE-787
receipt
Source
Red Hat
Its words
CWE-787
Read by
field:CWE
Said since
2026-10-02 18:04 UTC
Last answered
2026-10-02 18:04 UTC
Original
open at the source
What the source handed over
{
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  "CWE": "CWE-787",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2544842",
  "bugzilla_description": "pgvector: pgvector: Arbitrary code execution via out-of-bounds write during IVFFlat index build",
  "cvss3_score": "8.8",
  "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-10-01T19:49:03Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-103484.json",
  "severity": "important"
}
—
Product
product
NVDpgvector
receipt
Source
NVD
Its words
pgvector
Read by
field:cve.affected[].affectedData[].product
Said since
2026-10-02 12:00 UTC
Last answered
2026-10-02 18:04 UTC
Original
open at the source
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "pgvector",
            "vendor": "n/a",
            "versions": [
              {
                "lessThan": "0.8.7",
                "status": "affected",
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                "versionType": "semver"
              }
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    "lastModified": "2026-10-01T20:17:23.213",
    "metrics": {
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      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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—
Severity
severity
GitHub advisorieshigh
From 7.0 to 8.9.
receipt
Source
GitHub advisories
Its words
high
Read by
field:severity
Said since
2026-10-02 11:59 UTC
Last answered
2026-10-02 18:02 UTC
Original
open at the source
What the source handed over
{
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  "cve_id": "CVE-2026-103484",
  "cvss": {
    "score": 8.8,
    "vector_string": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  },
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      "vector_string": null
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—
Severity
severity
Red Hatimportant
A flaw that can easily compromise confidentiality, integrity or availability.
receipt
Source
Red Hat
Its words
important
Read by
field:severity
Said since
2026-10-02 18:04 UTC
Last answered
2026-10-02 18:04 UTC
Original
open at the source
What the source handed over
{
  "CVE": "CVE-2026-103484",
  "CWE": "CWE-787",
  "advisories": [],
  "affected_packages": [],
  "bugzilla": "2544842",
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  "cvss3_score": "8.8",
  "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "cvss_score": null,
  "cvss_scoring_vector": null,
  "package_state": null,
  "public_date": "2026-10-01T19:49:03Z",
  "resource_url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-103484.json",
  "severity": "important"
}
high
Status
status
NVDReceived
receipt
Source
NVD
Its words
Received
Read by
field:cve.vulnStatus
Said since
2026-10-02 12:00 UTC
Last answered
2026-10-02 18:04 UTC
Original
open at the source
What the source handed over
{
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      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "pgvector",
            "vendor": "n/a",
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    "metrics": {
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      },
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    "vulnStatus": "Received",
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          {
            "lang": "en",
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          },
          {
            "lang": "en",
            "value": "CWE-1284"
          }
        ],
        "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "type": "Secondary"
      }
    ]
  }
}
—
Vendor
vendor
NVDn/a
receipt
Source
NVD
Its words
n/a
Read by
field:cve.affected[].affectedData[].vendor
Said since
2026-10-02 12:00 UTC
Last answered
2026-10-02 18:04 UTC
Original
open at the source
What the source handed over
{
  "cve": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "pgvector",
            "vendor": "n/a",
            "versions": [
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                "versionType": "semver"
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        ],
        "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds, which can lead to arbitrary code execution."
      }
    ],
    "id": "CVE-2026-103484",
    "lastModified": "2026-10-01T20:17:23.213",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9,
          "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-103484",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "no"
              },
              {
                "technicalImpact": "total"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-10-01T19:58:32.132643Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-10-01T20:17:23.213",
    "references": [
      {
        "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "url": "https://github.com/pgvector/pgvector/commit/ee00d39ab30c2a7cf9510abf9288c624d91db156"
      },
      {
        "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "url": "https://github.com/pgvector/pgvector/issues/1036"
      }
    ],
    "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
    "vulnStatus": "Received",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-787"
          },
          {
            "lang": "en",
            "value": "CWE-1284"
          }
        ],
        "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "type": "Secondary"
      }
    ]
  }
}
—

vulnerability

pgvector: pgvector: Arbitrary code execution via out-of-bounds write during IVFFlat index build
zetlyn/cve-redhat · 2026-10-01
cvss 8.8 cwe CWE-787 severity important source
IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds, which can lead to arbitrary code execution.
zetlyn/cve-nvd · 2026-10-01
cvss 8.8 product pgvector status Received vendor n/a source
IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds,...
zetlyn/cve-ghsa · 2026-10-01
cvss 8.8 cwe CWE-787 severity high source