Vulnerability-Lookup

GHSA-JVGX-QPG4-CV6W

Vulnerability from github – Published: 2026-08-13 15:34 – Updated: 2026-08-13 15:34

Details

Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs. This may execute arbitrary code as the operating system user running the database. These types are typically sourced from application logic, not taken from the application's user. Hence, application users attacking the database, through the application as a conduit, are unlikely. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

Severity

8.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-14662"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-190"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-13T13:17:43Z",
    "severity": "HIGH"
  },
  "details": "Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs.  This may execute arbitrary code as the operating system user running the database.  These types are typically sourced from application logic, not taken from the application\u0027s user.  Hence, application users attacking the database, through the application as a conduit, are unlikely.  CVE-2026-6473 had fixed similar problems.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.",
  "id": "GHSA-jvgx-qpg4-cv6w",
  "modified": "2026-08-13T15:34:34Z",
  "published": "2026-08-13T15:34:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-14662"
    },
    {
      "type": "WEB",
      "url": "https://www.postgresql.org/support/security/CVE-2026-14662"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-14662 (GCVE-0-2026-14662)

Vulnerability from cvelistv5 – Published: 2026-08-13 13:00 – Updated: 2026-08-14 03:55

Title

PostgreSQL tsvector and tsquery undersize allocations, via integer wraparound

Summary

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-13 00:00 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

PostgreSQL

References

1 reference

URL	Tags
https://www.postgresql.org/support/security/CVE-2…

Impacted products

1 product

Vendor	Product	Version
n/a	PostgreSQL	Affected: 18 , < 18.5 (rpm) Affected: 17 , < 17.11 (rpm) Affected: 16 , < 16.15 (rpm) Affected: 15 , < 15.19 (rpm) Affected: 0 , < 14.24 (rpm)

Credits

The PostgreSQL project thanks Yuhang Wu, Zhenpeng Lin, Zheng Yu, and Hcamael for reporting this problem.

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-14662",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-14T03:55:52.206Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "PostgreSQL",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "18.5",
              "status": "affected",
              "version": "18",
              "versionType": "rpm"
            },
            {
              "lessThan": "17.11",
              "status": "affected",
              "version": "17",
              "versionType": "rpm"
            },
            {
              "lessThan": "16.15",
              "status": "affected",
              "version": "16",
              "versionType": "rpm"
            },
            {
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              "status": "affected",
              "version": "15",
              "versionType": "rpm"
            },
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            }
          ]
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      ],
      "credits": [
        {
          "lang": "en",
          "value": "The PostgreSQL project thanks Yuhang Wu, Zhenpeng Lin, Zheng Yu, and Hcamael for reporting this problem."
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs.  This may execute arbitrary code as the operating system user running the database.  These types are typically sourced from application logic, not taken from the application\u0027s user.  Hence, application users attacking the database, through the application as a conduit, are unlikely.  CVE-2026-6473 had fixed similar problems.  Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
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        }
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      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-190",
              "description": "Integer Overflow or Wraparound",
              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2026-08-13T13:00:01.726Z",
        "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "shortName": "PostgreSQL"
      },
      "references": [
        {
          "url": "https://www.postgresql.org/support/security/CVE-2026-14662/"
        }
      ],
      "title": "PostgreSQL tsvector and tsquery undersize allocations, via integer wraparound",
      "x_postgresql": {
        "component": "core server"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
    "assignerShortName": "PostgreSQL",
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    "datePublished": "2026-08-13T13:00:01.726Z",
    "dateReserved": "2026-07-03T20:28:07.779Z",
    "dateUpdated": "2026-08-14T03:55:52.206Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

GHSA-JVGX-QPG4-CV6W

CVE-2026-14662 (GCVE-0-2026-14662)

Tags

Sightings

Nomenclature