GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-14678 (GCVE-0-2026-14678)

Vulnerability from cvelistv5 – Published: 2026-08-13 13:00 – Updated: 2026-08-29 23:07
VLAI
Title
PostgreSQL pg_trgm picksplit reads past end of buffer
Summary
Buffer over-read in PostgreSQL pg_trgm index picksplit function reads past end of a heap buffer. This might allow a table maintainer to infer limited memory values, via the lossy signal of index split choices. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 14:39 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a PostgreSQL Affected: 18 , < 18.6 (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 Mehmet D. INCE for reporting this problem.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-14678",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T14:39:23.325065Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-13T15:36:52.887Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "PostgreSQL",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "18.6",
              "status": "affected",
              "version": "18",
              "versionType": "rpm"
            },
            {
              "lessThan": "17.11",
              "status": "affected",
              "version": "17",
              "versionType": "rpm"
            },
            {
              "lessThan": "16.15",
              "status": "affected",
              "version": "16",
              "versionType": "rpm"
            },
            {
              "lessThan": "15.19",
              "status": "affected",
              "version": "15",
              "versionType": "rpm"
            },
            {
              "lessThan": "14.24",
              "status": "affected",
              "version": "0",
              "versionType": "rpm"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "Attacker has permission to \"CREATE EXTENSION pg_trgm\", or another user previously issued that.  Attacker has permission to create objects (temporary objects or non-temporary objects in at least one schema)."
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "The PostgreSQL project thanks Mehmet D. INCE for reporting this problem."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Buffer over-read in PostgreSQL pg_trgm index picksplit function reads past end of a heap buffer.  This might allow a table maintainer to infer limited memory values, via the lossy signal of index split choices.  Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-126",
              "description": "Buffer Over-read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-29T23:07:21.812Z",
        "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "shortName": "PostgreSQL"
      },
      "references": [
        {
          "url": "https://www.postgresql.org/support/security/CVE-2026-14678/"
        }
      ],
      "title": "PostgreSQL pg_trgm picksplit reads past end of buffer",
      "x_postgresql": {
        "component": "contrib module"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
    "assignerShortName": "PostgreSQL",
    "cveId": "CVE-2026-14678",
    "datePublished": "2026-08-13T13:00:08.713Z",
    "dateReserved": "2026-07-03T20:28:17.298Z",
    "dateUpdated": "2026-08-29T23:07:21.812Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-14678",
      "date": "2026-09-18",
      "epss": "0.00195",
      "percentile": "0.09553"
    },
    "microsoft_vex": {
      "current_release_date": "2026-08-23T15:03:35.000Z",
      "cve": "CVE-2026-14678",
      "id": "msrc_CVE-2026-14678",
      "initial_release_date": "2026-08-14T19:37:21.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "PostgreSQL pg_trgm picksplit reads past end of buffer",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-14678.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "PostgreSQL",
                "vendor": "n/a",
                "versions": [
                  {
                    "lessThan": "18.6",
                    "status": "affected",
                    "version": "18",
                    "versionType": "rpm"
                  },
                  {
                    "lessThan": "17.11",
                    "status": "affected",
                    "version": "17",
                    "versionType": "rpm"
                  },
                  {
                    "lessThan": "16.15",
                    "status": "affected",
                    "version": "16",
                    "versionType": "rpm"
                  },
                  {
                    "lessThan": "15.19",
                    "status": "affected",
                    "version": "15",
                    "versionType": "rpm"
                  },
                  {
                    "lessThan": "14.24",
                    "status": "affected",
                    "version": "0",
                    "versionType": "rpm"
                  }
                ]
              }
            ],
            "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6BEE5714-C2EF-48DC-8613-C3EAA149E12E",
                    "versionEndExcluding": "14.24",
                    "versionStartIncluding": "14.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "F433746A-733F-4ED0-9913-8AF69E0C8BF2",
                    "versionEndExcluding": "15.19",
                    "versionStartIncluding": "15.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "1996B91F-E0B2-4A78-8788-E17EA68D179C",
                    "versionEndExcluding": "16.15",
                    "versionStartIncluding": "16.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3D04E642-71D7-4979-AA19-B9CCDEFD8C31",
                    "versionEndExcluding": "17.11",
                    "versionStartIncluding": "17.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "8494F67B-673A-4E1F-8F40-D24DCC1F8DA4",
                    "versionEndExcluding": "18.5",
                    "versionStartIncluding": "18.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Buffer over-read in PostgreSQL pg_trgm index picksplit function reads past end of a heap buffer.  This might allow a table maintainer to infer limited memory values, via the lossy signal of index split choices.  Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected."
          }
        ],
        "id": "CVE-2026-14678",
        "lastModified": "2026-08-29T23:17:16.307",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 1.4,
              "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-14678",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-13T14:39:23.325065Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-13T13:17:45.150",
        "references": [
          {
            "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "https://www.postgresql.org/support/security/CVE-2026-14678/"
          }
        ],
        "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-126"
              }
            ],
            "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-03T10:14:45+00:00",
      "cve": "CVE-2026-14678",
      "id": "CVE-2026-14678",
      "initial_release_date": "2026-08-13T13:00:08.713000+00:00",
      "product_status:known_affected": "186",
      "product_status:known_not_affected": "3",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "postgresql: PostgreSQL: Information disclosure via buffer over-read in pg_trgm",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-14678.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-15T02:14:23Z",
      "cve": "CVE-2026-14678",
      "id": "CVE-2026-14678",
      "initial_release_date": "2026-08-14T23:59:44Z",
      "product_status:known_affected": "144",
      "product_status:known_not_affected": "360",
      "product_status:recommended": "1014",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-14678",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-14678.json",
      "version": "12"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-14678",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-08-13T14:39:23.325065Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-08-13T15:36:48.314Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "PostgreSQL",
              "vendor": "n/a",
              "versions": [
                {
                  "lessThan": "18.6",
                  "status": "affected",
                  "version": "18",
                  "versionType": "rpm"
                },
                {
                  "lessThan": "17.11",
                  "status": "affected",
                  "version": "17",
                  "versionType": "rpm"
                },
                {
                  "lessThan": "16.15",
                  "status": "affected",
                  "version": "16",
                  "versionType": "rpm"
                },
                {
                  "lessThan": "15.19",
                  "status": "affected",
                  "version": "15",
                  "versionType": "rpm"
                },
                {
                  "lessThan": "14.24",
                  "status": "affected",
                  "version": "0",
                  "versionType": "rpm"
                }
              ]
            }
          ],
          "configurations": [
            {
              "lang": "en",
              "value": "Attacker has permission to \"CREATE EXTENSION pg_trgm\", or another user previously issued that.  Attacker has permission to create objects (temporary objects or non-temporary objects in at least one schema)."
            }
          ],
          "credits": [
            {
              "lang": "en",
              "value": "The PostgreSQL project thanks Mehmet D. INCE for reporting this problem."
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Buffer over-read in PostgreSQL pg_trgm index picksplit function reads past end of a heap buffer.  This might allow a table maintainer to infer limited memory values, via the lossy signal of index split choices.  Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-126",
                  "description": "Buffer Over-read",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-08-29T23:07:21.812Z",
            "orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
            "shortName": "PostgreSQL"
          },
          "references": [
            {
              "url": "https://www.postgresql.org/support/security/CVE-2026-14678/"
            }
          ],
          "title": "PostgreSQL pg_trgm picksplit reads past end of buffer",
          "x_postgresql": {
            "component": "contrib module"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007",
        "assignerShortName": "PostgreSQL",
        "cveId": "CVE-2026-14678",
        "datePublished": "2026-08-13T13:00:08.713Z",
        "dateReserved": "2026-07-03T20:28:17.298Z",
        "dateUpdated": "2026-08-29T23:07:21.812Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


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.