Vulnerability-Lookup

GHSA-239Q-Q7G3-5876

Vulnerability from github – Published: 2026-11-02 21:31 – Updated: 2026-11-02 21:31

Details

psqlODBC sizes its row cache from the column count of a cursor's first result, but recomputes the column count from each later FETCH reply without checking that it matches. A server not trusted under current SSL settings can answer a later FETCH with more columns and make the driver write tuple records past the end of the heap allocation. A keyset reply with fewer columns than the key fields also underflows the unsigned field count. This is reachable with UseDeclareFetch enabled. Versions before psqlODBC 18.00.0006 are affected.

Severity

7.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-120058"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-191"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-02T19:18:02Z",
    "severity": "HIGH"
  },
  "details": "psqlODBC sizes its row cache from the column count of a cursor\u0027s first result, but recomputes the column count from each later FETCH reply without checking that it matches. A server not trusted under current SSL settings can answer a later FETCH with more columns and make the driver write tuple records past the end of the heap allocation. A keyset reply with fewer columns than the key fields also underflows the unsigned field count. This is reachable with UseDeclareFetch enabled. Versions before psqlODBC 18.00.0006 are affected.",
  "id": "GHSA-239q-q7g3-5876",
  "modified": "2026-11-02T21:31:57Z",
  "published": "2026-11-02T21:31:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-6rmx-9q62-4w6m"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-120058"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-120058 (GCVE-0-2026-120058)

Vulnerability from cvelistv5 – Published: 2026-11-02 19:09 – Updated: 2026-11-02 19:33

Title

psqlODBC row cache overflow when a later FETCH changes the column count

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/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 2026-11-02 19:33 UTC

CWE

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

Assigner

PostgreSQL CNA under the redhat root

CNA scorecard C 71/100 over 122 records in the last 180 days details

References

1 reference

URL	Tags
https://github.com/postgresql-interfaces/psqlodbc…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
PostgreSQL	psqlODBC	Affected: 0 , < 18.00.0006 (custom)

Date Public

2026-11-02 00:00

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-120058",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-11-02T19:33:38.487446Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-11-02T19:33:49.913Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "psqlODBC",
          "programFiles": [
            "qresult.c"
          ],
          "programRoutines": [
            {
              "name": "QR_from_PGresult"
            }
          ],
          "repo": "https://github.com/postgresql-interfaces/psqlodbc",
          "vendor": "PostgreSQL",
          "versions": [
            {
              "lessThan": "18.00.0006",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2026-11-02T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "psqlODBC sizes its row cache from the column count of a cursor\u0027s first result, but recomputes the column count from each later FETCH reply without checking that it matches. A server not trusted under current SSL settings can answer a later FETCH with more columns and make the driver write tuple records past the end of the heap allocation. A keyset reply with fewer columns than the key fields also underflows the unsigned field count. This is reachable with UseDeclareFetch enabled. Versions before psqlODBC 18.00.0006 are affected."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787 Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-191",
              "description": "CWE-191 Integer Underflow (Wrap or Wraparound)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-02T19:09:09.747Z",
        "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "shortName": "PostgreSQL"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-6rmx-9q62-4w6m"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to psqlODBC 18.00.0006 or later. The driver rejects a column count that changes between fetches of the same cursor, and a keyset reply with fewer columns than the key fields."
        }
      ],
      "title": "psqlODBC row cache overflow when a later FETCH changes the column count",
      "workarounds": [
        {
          "lang": "en",
          "value": "Set UseDeclareFetch=0, or connect only to servers authenticated with sslmode=verify-full or an equivalent GSS setting."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
    "assignerShortName": "PostgreSQL",
    "cveId": "CVE-2026-120058",
    "datePublished": "2026-11-02T19:09:09.747Z",
    "dateReserved": "2026-10-30T19:25:18.919Z",
    "dateUpdated": "2026-11-02T19:33:49.913Z",
    "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.

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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.
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