CVE-2026-109448 (GCVE-0-2026-109448)

Vulnerability from cvelistv5 – Published: 2026-10-12 17:42 – Updated: 2026-10-12 17:42
VLAI
Title
psqlODBC SQLBindParameter heap memory corruption when binding more than 32767 parameters
Summary
Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-190 - Integer Overflow or Wraparound
  • CWE-124 - Buffer Underwrite ('Buffer Underflow')
Assigner
PostgreSQL CNA under the redhat root
CNA scorecard C 67/100 over 85 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
PostgreSQL psqlODBC Affected: 08.01.0102 , < 18.00.0005 (custom)
guessed Create a notification for this product.
Credits
vltr Richard Kuesters
Show details on NVD website
To clipboard 

{
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        {
          "defaultStatus": "unaffected",
          "product": "psqlODBC",
          "programFiles": [
            "bind.c"
          ],
          "programRoutines": [
            {
              "name": "SQLBindParameter"
            }
          ],
          "repo": "https://github.com/postgresql-interfaces/psqlodbc",
          "vendor": "PostgreSQL",
          "versions": [
            {
              "lessThan": "18.00.0005",
              "status": "affected",
              "version": "08.01.0102",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "vltr Richard Kuesters"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
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              "lang": "en",
              "value": "GENERAL"
            }
          ]
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-190",
              "description": "CWE-190 Integer Overflow or Wraparound",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-124",
              "description": "CWE-124 Buffer Underwrite (\u0027Buffer Underflow\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-12T17:42:59.581Z",
        "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "shortName": "PostgreSQL"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-cmfx-rm3r-p2jr"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to psqlODBC 18.00.0005 or later. SQLBindParameter now rejects parameter numbers outside 1..32767 with SQLSTATE 07009 (invalid descriptor index)."
        }
      ],
      "title": "psqlODBC SQLBindParameter heap memory corruption when binding more than 32767 parameters",
      "workarounds": [
        {
          "lang": "en",
          "value": "Do not bind more than 32767 parameters on a single statement. Limit the number of parameters an application builds from external input, or pass large value lists as a single array parameter, for example = ANY(?)."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
    "assignerShortName": "PostgreSQL",
    "cveId": "CVE-2026-109448",
    "datePublished": "2026-10-12T17:42:59.581Z",
    "dateReserved": "2026-10-12T16:34:39.636Z",
    "dateUpdated": "2026-10-12T17:42:59.581Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "psqlODBC",
                "programFiles": [
                  "bind.c"
                ],
                "programRoutines": [
                  {
                    "name": "SQLBindParameter"
                  }
                ],
                "repo": "https://github.com/postgresql-interfaces/psqlodbc",
                "vendor": "PostgreSQL",
                "versions": [
                  {
                    "lessThan": "18.00.0005",
                    "status": "affected",
                    "version": "08.01.0102",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Integer wraparound in psqlODBC SQLBindParameter allows an application, or an attacker who controls how many parameters the application binds on one statement, to corrupt heap memory. psqlODBC stores the binding count in a signed 16-bit field. Binding parameter number 32768 wraps that count to -32768. Binding parameter 32769 then writes about 2.5 MB of zeros starting 1.25 MB before the binding array, which crashes the application or leaves it running on a corrupted heap. Applications that build parameter lists from untrusted input, such as an IN (?, ?, ...) list, are exposed. Versions before psqlODBC 18.00.0005 are affected."
          }
        ],
        "id": "CVE-2026-109448",
        "lastModified": "2026-10-12T18:17:22.633",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
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              "impactScore": 3.6,
              "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-12T18:17:22.633",
        "references": [
          {
            "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
            "url": "https://github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-cmfx-rm3r-p2jr"
          }
        ],
        "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-124"
              },
              {
                "lang": "en",
                "value": "CWE-190"
              }
            ],
            "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-12T18:42:15+00:00",
      "cve": "CVE-2026-109448",
      "id": "CVE-2026-109448",
      "initial_release_date": "2026-10-12T17:42:59.581000+00:00",
      "product_status:known_affected": "6",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "postgresql-odbc: postgresql-odbc: Denial of Service via integer wraparound in SQLBindParameter",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-109448.json",
      "version": "3"
    }
  }
}



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